This diff is a part of the flat diffs stack to transform the current Tunnelbroker project into a Rust app by calling the current C++ codebase from Rust. The related transition task is ENG-1072.
This diff creates a Cargo build.rs file which builds and links the current C++ codebase to the Rust application.
Related Linear task and discussion: ENG-2093
CI Notice:
The CI will fail on this and further diffs until the D5461 where the changes to CI build commands are made.
This stack will be landed all in one to prevent CI from failing on diffs out of this stack.