This is what we call a frame challenge—an attempt to demonstrate why the things you are asking for aren’t actually going to work out the way you imagine they will. This is in no way an indictment of your goals; a melee cleric is an entirely reasonable character to want to play, and on its face, the concept of a “low point-buy campaign” has merit, seems like a way to add challenge or push players out of their comfort zone.
Unfortunately, your goals for this character are an excellent case-in-point for why such a low point-buy is actually terrible for a campaign. The mathematics of Pathfinder just respond incredibly poorly to it, and it all-but-forces players to adopt primary spellcasting—the most powerful approach to the game—to mitigate those problems. And if the goal was, itself, to have a game where the players faced those problems, low point buy, at least by itself, doesn’t accomplish that—primary spellcasters will be able to all-but-completely ignore it. There are vastly superior ways to accomplish that goal, that does so more evenly across different types of characters.
I will be talking a lot about what a character “needs.” This is based on the math of the game—the average expectations for things like attack bonus and AC, damage and HP, saving throws and DCs, that are baked into the game via its monster design. It would be out of scope here to fully lay out the mathematical progressions, but suffice to say that monsters are generally designed expecting that adventurers who challenge them will have pretty high values in the appropriate stats—that their attack rolls will involve decent BAB, pretty high ability scores, maybe even some feat boosts, that their saving throw DCs will stem from very high ability scores, and so on. Pathfinder expects you to reliably land effects against such monsters in order to beat them.
To be sure, a good GM could get around all of these problems—but it is a lot of work, more than it might appear to be. CR is an unwieldy, unreliable tool in the best of times, but changing the game so drastically makes it even less useful. I would not recommend that to any GM. And there, really, lies the rub—if low point buy is supposed to make the game harder, the fact that the GM has to either choose weaker monsters, or downgrade some of their numbers, in order to compensate, completely dispels that.
So I will be assuming that the GM isn’t doing that. And the reason why I’ll be making that assumption is...
A primary spellcaster almost doesn’t care about the low point buy
You could be a fantastically-powerful cleric at that point-buy—just be a primary spellcaster. Dwarf cleric gets you a neat 16 Constitution, 18 Wisdom, and you’re good to go, easily among the most powerful possible Pathfinder classes. The 10 point-buy constrains you a bit, but it doesn’t ultimately stop a primary-spellcaster cleric from being powerful.
However, that requires dumping Strength and Charisma, most likely. You’re unlikely to be much of a melee fighter like that. You can take Guided Hand, sure—but that’s two feats to fix only accuracy. Your melee attacks still won’t have any serious damage to them, and most avenues for increasing it are out. With your prodigious Wisdom and mighty cleric spellcasting, every time you actually swing a weapon, it will be a huge wasted opportunity to have cast a spell, instead. Sure, OK, sometimes the battle’s already decided and you don’t want to waste a spell slot mopping up, so you swing your weapon a little. It won’t really matter much but you could. Burning two feats on that is a stretch, particularly since you won’t actually be all that efficient mopping up, but you could.
There is maybe some room here to be less dedicated to spellcasting... but that’s not enough to make you a serious melee combatant.
You say you want more than just having a weapon around to mop up. You want swinging your weapon to actually be a meaningful option. Say you go with 13 Strength, to take Power Attack and associated feats. Well, that has to come out of your Wisdom, clearly; with 10 point buy, there’s nowhere else to take it from. So you drop to 16 Wisdom—still useful, if not great. 13 Strength, 14 Constitution, 16 Wisdom. I really hope you weren’t planning on using any of your Charisma-based class features. Only you’re a medium-BAB class, and your Strength bonus is just +1. Your accuracy here is poor, and your damage is mediocre. So maybe you switch your Strength and Constitution, and you get a +2 bonus, which can be +3 damage instead of +1 if you have a two-hander (and you probably should). OK, that’s great except... you also have a Constitution bonus of +1. On a d8-HD class. Standing in the front lines is... unlikely to go well for you.
Trying to push it even further just spreads you too thin to do much of anything right
Can you sap even more Wisdom? Maybe, but the mathematics of point buy are no longer making that seem all that attractive. Dropping from a base of 16 to a base of 14 saves a whopping 5 points—and with dwarf, you still have a Wisdom of 16, which is OK. But dropping from that 14 base to a 12 base only saves 3 points, and now you’re at 14 Wisdom—now you’re getting low enough that anything with a saving throw isn’t really a good idea, and you’re missing out on bonus spells pretty soon here. Maybe you get some kinda-decent Strength and Constitution going on, but you’re still a medium-BAB class, a d8-HD class. You can fight, but you’re mediocre at it. You can cast spells, but you’re pretty mediocre at that, too. And the monsters that an adventurer faces have a nasty tendency to eat mediocrity for breakfast.
And pure warriors aren’t really faring too much better, either.
For the sake of argument, though, say you go all in, abandon cleric altogether. Now you can safely ignore Wisdom, right, and just go for that sweet Strength and Constitution, with some nice full-BAB, d10-HD or d12-HD class? Except you won’t have much of anything in the way of mental scores, so a lot of feats will be barred to you. You will be slow to react, prone to magical danger, useless when it comes to talking, or working your way past traps and obstacles. You’ll be pretty weak at anything that isn’t swinging a sword. And as important as that is, Pathfinder adventurers are usually called upon for a bit more than that. In effect, all the problems of Pathfinder mundane characters will be badly exacerbated by your need to ignore everything that’s not sword-swinging. And yes, you will need to.
Conclusion: Low point buy accomplishes little but making “primary spellcaster” even more desirable than it already was
So you see how in this spectrum, everything that isn’t “primary spellcaster” is just somewhere between “mediocre” and “bad.” That is what this point buy accomplishes. It hurts the weakest classes, and it prevents even strong classes from doing anything too unusual. It basically takes Pathfinder, a game that very heavily rewards spellcasters, and massively amps up those rewards, while also throwing a bunch of punishments on top of non-spellcasters.
It’s a flaw in the system, and it’s obnoxious, but it’s also not easily going away. Low point buys just do not work well. I strongly recommend to your GM to just avoid them. I strongly recommend to you that if you play in such a campaign anyway, a primary spellcaster is very likely to be the least frustrating route. Because the mathematics of the game mean that either other sorts of characters are going to find themselves missing too much, being hit too often, and having too little HP to soak hits, while the spellcaster seems even more godly by comparison than he already would have, or else (less likely) you’re in a campaign where the GM is compensating for the low point buy—and where a primary spellcaster is just going to mop the floor with everything.