[clang] Re-apply "[Parse] Split incremental-extensions" (PR #66446)

[via cfe-commits]

https://github.com/llvmbot labeled 
https://github.com/llvm/llvm-project/pull/66446
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits