Port the #![windows_subsystem] attribute to the new attribute system

[scrabsha]

Part of #131229.

r? @jdonszelmann

I think it's worth running the Windows test suite before merging that (I don't have the rights for this).

[rustbot]

Some changes occurred in compiler/rustc_hir/src/attrs

cc @jdonszelmann

Some changes occurred in compiler/rustc_passes/src/check_attr.rs

cc @jdonszelmann

Some changes occurred in compiler/rustc_attr_parsing

cc @jdonszelmann

[jdonszelmann]

uh, I think this should be the right job:
@bors try jobs=x86_64-msvc

[rust-bors]

💔 Test for 1e90a73 failed: CI. Failed job:

• Calculate job matrix (web logs, extended logs)

[rust-log-analyzer]

A job failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

   Compiling ureq v3.0.8
   Compiling citool v0.1.0 (/home/runner/work/rust/rust/src/ci/citool)
    Finished `dev` profile [unoptimized] target(s) in 36.78s
     Running `target/debug/citool calculate-job-matrix`
Run type: TryJob { job_patterns: Some(["x86_64-msvc"]) }
Error: Failed to calculate job matrix

Caused by:
    Patterns `x86_64-msvc` did not match any auto jobs
##[error]Process completed with exit code 1.