[clang] Add nodelete annotation for WebKit checkers (PR #177839)

[Ryosuke Niwa via cfe-commits]

rniwa wrote:

> I also don't know what is the desired documentation format/media for this string (practically untyped) attribute? However, I don't see any docs in this PR.

Where do I add docs?

https://github.com/llvm/llvm-project/pull/177839