[clang-tools-extra] [clang-tidy] Add new modernize-string-find-startswith check (PR #72385)

[Piotr Zegar via cfe-commits]

================
@@ -181,6 +181,14 @@ New checks
   points in a coroutine. Such hostile types include scoped-lockable types and
   types belonging to a configurable denylist.
 
+- New :doc:`modernize-string-find-startswith
+  <clang-tidy/checks/modernize/string-find-startswith>` check.
+
+  Checks whether a ``std::string::find()`` or ``std::string::rfind()`` (and
+  corresponding ``std::string_view`` methods) result is compared with 0, and
+  suggests replacing with ``starts_with()``. This is both a readability and a
----------------
PiotrZSL wrote:

"This is both a readability and a performance issue." no need for that in release notes

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