cpufeatures: add support for avx10.1 and avx10.2

[MuntasirSZN]

No description provided.

[newpavlov]

We generally try to follow language naming of target features and I don't see any intrinsics for the added features except avx10.2.

[MuntasirSZN]

We generally try to follow language naming of target features and I don't see any intrinsics for the added features except avx10.2.

For target_features:

avx10.1: https://doc.rust-lang.org/stable/nightly-rustc/src/rustc_target/target_features.rs.html#425
avx10.2: https://doc.rust-lang.org/stable/nightly-rustc/src/rustc_target/target_features.rs.html#444

For intrinsics:

avx10.1 is a cleanup isa. See: rust-lang/rust#138843 so there isnt avx10.1 specific intrinsics (Should be removed? direct avx512* target_feature?)
avx10.2: rust-lang/stdarch#2045 (still work in progress, but target_features is done.

evex512 is LLVM specific, going to remove (if avx512 is available, evex512 is also available) and for avx10.1-512, again LLVM specific (sorry) avx10.1 = avx10.1-512.

@newpavlov

[MuntasirSZN]

Nope avx10.1 is sill needed.... Otherwise +avx10.1 would basically not work.

[MuntasirSZN]

Done! @newpavlov