[clang-tools-extra] Add new check: do not return 0; at the end of main() in C++ (PR #77586)

[via cfe-commits]

EugeneZelenko wrote:

@11happy: There are plenty of Clang-tidy issues with such tag: https://github.com/llvm/llvm-project/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22+label%3Aclang-tidy

https://github.com/llvm/llvm-project/pull/77586