Metal feature detection is very broken

[inner-daemons]

Description

See #8439

Many (most?) of the feature detection logic in the metal backend is completely incorrect. You usually need to check for a specific metal version, a feature family, or specific versions of different OSes. This is often not checked correctly. For example, I have seen checks that ignore the API version completely. Many checks also assume tvOS versions and iOS versions have the same feature support which isn't true.

Some examples: vertex amplficiation checks calls a function not available everywhere, barycentrics is the same.

Repro steps
Look at the feature detection code

Expected vs observed behavior
It should be correct

Extra materials
None

Platform
Metal