[clang-tools-extra] [clangd] Make clangd-indexer respect .clangd configuration files (PR #214951)

[Nathan Ridge via cfe-commits]

HighCommander4 wrote:

> I'll address the current limitation with a comment near the abs path call. After that PR, I'll try to fix the problem in a separate one.

I filed https://github.com/llvm/llvm-project/issues/228818 to track addressing the limitations we left in this PR, with the outline of one idea of specific libTooling changes we could explore.

Feel free to work on it if it looks interesting to you (but also don't feel obligated to).

https://github.com/llvm/llvm-project/pull/214951