feature(psl): Support ignore directives on values in enums

[Aijeyomah]

Description

• Support @ignore directives on values in enums types
• Update psl/psl/Cargo.toml to enable all psl-core features for the test environment to resolve the unresolved import errors during cargo test -p psl
• Add test to verify functionality

Note to reviewer

The issue raised included adding support for the @deprecated directive, but that work is out of scope for this pull request. I plan to open a separate PR to handle the @deprecated directive.

Closes #27911

[Aijeyomah]

@jacek-prisma @jkomyno, can you help review this PR? Thanks!

[codspeed-hq]

CodSpeed Performance Report

Merging #5648 will not alter performance

_{Comparing Aijeyomah:feature/support-enum-ignore-directive (ca8119d) with main (9bf76db)}

Summary

✅ 11 untouched