feat: improve devcontainer configuration

[bpapaspyros]

Description

• n/a

This PR solves the issue by updating the devcontainer configuration to use clangd for linting and hints.

• I generalized the generate_compile_commands script enough that I think it could now be included in our ros2_ws image

However, non-ros repos (i.e., control-libraries) would still require a slightly different script that directly uses cmake. So, perhaps we need 2 scripts in ros2_ws

Review guidelines

Estimated Time of Review: 5 minutes

Checklist before merging:

• Confirm that the relevant changelog(s) are up-to-date in case of any user-facing changes