Add pre-commit hooks for cargo-check, rustfmt, and clippy

[declark1]

Description

Set up and configure pre-commit hooks for cargo-check (code errors), rustfmt (formatting), clippy (linting) to ensure clean code and reduce nit review comments.

[evaline-ju]

I realized I ended up adding some of this into the docker layers (since proto compilation was needed) on github actions with initial test runs - https://github.com/foundation-model-stack/fms-guardrails-orchestrator/blob/main/.github/workflows/test.yml. Only clippy and fmt were included