[InstallAPI] Set InstallAPI as a standalone tool instead of CC1 action#82293

cyndyishida merged 2 commits intollvm:mainllvm/llvm-project:mainfrom

cyndyishida:eng/PR-clangInstallAPIPartialRevertcyndyishida/llvm-project:eng/PR-clangInstallAPIPartialRevertCopy head branch name to clipboard