Vendor the google-c-style module, and configure lsp-mode to run the
clangd wrapper script for hacking on tvlnix
Change-Id: I8d1ac2f30c9708501e0840ef3d53fe479bc39fa7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1166
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>