[clang-tools-extra] [clang-tidy] Add new modernize-use-starts-ends-with check (PR #72385)

[Piotr Zegar via cfe-commits]

PiotrZSL wrote:

@nicovank I run check on llvm, reported 3 issues, no false-positives. There is warning reported for FindFun variable because is used only in assert, check if you could do something with it, maybe add if for checking agains null, to silent warning or removing this variable and assert.
Check your github config (email privacy) otherwise this PR will be merged as nicovank at users.noreply.github.com

https://github.com/llvm/llvm-project/pull/72385