These projects, which are not currently included in CI runs, don't
build at the moment.
Upcoming logic changes would mean that we would start including them
in CI, which is undesirable until they're fixed - but I'm not going to
be doing that now.
Change-Id: I7c337e098be8bff00db6d99fc7236a695f5a85f5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1850
Tested-by: BuildkiteCI
Reviewed-by: kanepyork <rikingcoding@gmail.com>
Adds the proto definitions required for the Stackdriver Logging API.
This compiles, but I'm unsure whether it's actually correct because
there seems to be a lot of copy & paste in the build setup.
Updates the build process for googleapis in C++ to read the proto
sources from the GOOGLEAPIS_DIR environment variable (injected by Nix)
instead of attempting to download them at build time.
