[clang-tools-extra] [clang-tidy] Add option to keep virtual in 'modernize-use-override' (PR #144916)

[Baranov Victor via cfe-commits]

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

Please add your change to ReleaseNotes.rst 

https://github.com/llvm/llvm-project/pull/144916