[clang-tools-extra] added option `google-readability-namespace-comments.AllowNoNamespaceComments` (PR #124265)

[Congcong Cai via cfe-commits]

HerrCai0907 wrote:

I am not a native English speaker, just a personal feeling. I prefer `AllowOmittingNamespaceComments` since it is clearer then `AllowNoNamespaceComments`.

https://github.com/llvm/llvm-project/pull/124265