Bring the rBPF crate to the monorepo

[LucasSte]

Problem

The rBPF create is an integral part of the validator, however it sits outside of the monorepo, hindering updates, security responses and bug fixes.

Summary of Changes

I brought the crate to the monorepo, and configured the CI (clippy, tests and fmt).

For a next PR, I'll set up the cargo fuzz job in the CI. It is not done here, because it requires changing the docker container.

[LucasSte]

The failure in the CI happens because we need to transfer the crate's ownership to anza-team.

[LucasSte]

@yihau has already worked on adding cargo fuzz build in the checks pipeline: #1932, but we need to have this PR merged before that one.

[LucasSte]

We are not merging at this time, since we are potentially splitting the SVM into its own repository.