Add min gpu family for baking apple shaders

[TCROC]

This adds the ability to specify the minimum gpu family to bake apple shaders against. Currently our MacOS version has a higher gpu family than the iPhone XR supports. Hence when we bake our shaders, they don't run on the iPhone XR. This gives more granular support in the shader baking process and allows users to target older devices than their current Mac.

[TCROC]

Some issues occurred when rebasing on master before I put in this PR. I'll touch these up tomorrow. But the concept is still the same if anyone wants to review

[stuartcarnie]

The issue is more complex than the min GPU, when baking shaders.

Unfortunately, when shaders are queried in the renderer, it asks the host platform for supported features, such as RD::SUPPORTS_IMAGE_ATOMIC_32_BIT (the primary culprit of the baking issues). On the host platform, this returns true. When baking the shader, the minimum GPU and Metal versions are passed to SPIRV-Cross, based on the MetalDeviceProfile. By default, the versions we pass do not support atomics, so it generates unsupported shader code, as SPIRV-Cross tries to emulate atomics.

Important

If the user specified a target OS of iOS 17 (Metal 3.1) for iOS, the baked shaders should work. For earlier OS versions, Godot should fall back to compiling the code.

[stuartcarnie]

I think the interim solution is to limit shader baking to iOS 17+ for the moment, so that it doesn't generate incorrect shader output.

[TCROC]

@bruvzg @stuartcarnie Also I updated metal_device_profile.cpp and rendinger_device_driver_metal.cpp to include Apple10 in their switch case statements since @stuartcarnie suggested to add that enum into this PR. If there is anywhere else that needs updating for new Apple10 enum just let me know. But searching the repo, that was all I found.