[clang-tools-extra] [clang-tidy] Add a new check 'replace-with-string-view' (PR #172170)

[Zinovy Nis via cfe-commits]

irishrover wrote:

So I have 2 things to be done:
- rename the check
- add options for custom string types (most probably in the next PR)


https://github.com/llvm/llvm-project/pull/172170