[clang] Run PreStmt/PostStmt checker for GCCAsmStmt (PR #95409)

[Balazs Benics via cfe-commits]

https://github.com/steakhal requested changes to this pull request.

Thanks for the ping. Looks really nice!
FYI I just came across a case last week w.r.t asm gotos. You can have a read [here](https://sonarsource.atlassian.net/browse/CPP-5459) if you are interested in the subject.

https://github.com/llvm/llvm-project/pull/95409