Add support for Rust

[atodorov]

Description of the issue

It looks like CodeQL doesn't support the Rust programming language. Please add it.

[aeisenberg]

Thank you for your feedback. We will consider this in our future planning.

[coadaflorin]

Hey @atodorov, just wanted to let you know that we shipped support for Rust in CodeQL to public preview. Give it a go and let us know how things went for you!