Run the relay Bare-Metal non-containerized

[0ex-d]

The current setup is optimized for running the relay via Docker, which works well for containerized environments. However, some developers prefer running the relay bare-metal to allow for easier debugging, flexibility, or environments where Docker isn’t available or practical.

Proposed Solutions:

• Add a Makefile to handle tasks such as building, testing, and running the relay.
• Clear documentation on required dependencies and setup steps pointed out by Add build dependencies to README #16 .
• Ensure cargo test, cargo clippy, cargo doc can be run seamlessly outside Docker.

P.S: There’s already a ./justfile with potential for more commands to be added. Documenting its usage can further complement the bare-metal setup.

Kindly, let me know your thoughts on this.