setup local build of `remote_server` to not depend of the local linux
libraries by :
- enable `vendored-libgit2` feature of git2
- setup target triple to `unknown-linux-musl` (mirror bundle-linux
script)
- add flag ` -C target-feature=+crt-static` in `RUSTFLAGS` env var
(mirror bundle-linux script)

Bonus:
Add an option to setup mold as linker of local build.

Closes #33341

Release Notes:

 - N/A