ci(pre-commit): config and docs (#942)

.pre-commit-config.yaml

@@ -0,0 +1,7 @@
+repos:
+  - repo: https://github.com/doublify/pre-commit-rust
+    rev: v1.0
+    hooks:
+      - id: fmt
+      - id: clippy
+

CONTRIBUTING.md

@@ -0,0 +1,33 @@
+# Contributing to Nomos Node
+
+We're glad you're interested in contributing to Nomos Node!
+
+This document describes the guidelines for contributing to the project. We will be updating it as we grow and we figure
+out what works best for us.
+
+If you have any questions, come say hi to our [Discord](https://discord.gg/G6q8FgZq)!
+
+## Running Pre-Commit Hooks
+
+To ensure consistent code quality, we ask that you run the `pre-commit` hooks before making a commit.
+
+These hooks help catch common issues early and applies common code style rules, making the review process smoother for
+everyone.
+
+1. Install the [pre-commit](https://pre-commit.com/) tool if you haven't already:
+
+```bash
+# On Fedora
+sudo dnf install pre-commit
+
+# On other systems
+pip install pre-commit
+```
+
+2. Install the pre-commit hooks:
+
+```bash
+pre-commit install
+```
+
+3. That's it! The pre-commit hooks will now run automatically when you make a commit.