[clang-tools-extra] [clang-tidy] Add readability-redundant-casting check (PR #70595)

[Piotr Zegar via cfe-commits]

https://github.com/PiotrZSL commented:

Rebased code, changed utils::fixit::needParens into recently added more generic utils::fixit::areParensNeededForStatement. Renamed areTypesEquals into areTypesEqual.git dif

https://github.com/llvm/llvm-project/pull/70595