[clang-tools-extra] [clang-tidy] Add readability-use-span-first-last check (PR #118074)

[Congcong Cai via cfe-commits]

https://github.com/HerrCai0907 commented:

In general LGTM after considering more size cases. 
It may still work on `TraversalKind::TK_IgnoreUnlessSpelledInSource`. Could you try to set traversal mode in `getCheckTraversalKind`. It can avoid noise of something like implicit cast.

https://github.com/llvm/llvm-project/pull/118074