Add pre-commit hooks guide to documentation

[kashifpk]

Description

Add documentation on how to set up pre-commit hooks across the Agentic Forge repositories to catch CI issues before pushing.

Background

Recent commits to mcp-weather and mcp-web-search caused CI failures that could have been caught locally with pre-commit hooks.

Tasks

• Document the pre-commit setup process for Python repos
• Add a section to GETTING_STARTED.md about running checks before committing
• Consider adding a script to install pre-commit hooks across all repos

Example Commands

# For Python repos (mcp-weather, mcp-web-search, forge-armory, forge-orchestrator)
cd <repo>
uv run pre-commit install
uv run pre-commit run --all-files

# Or manually run checks
uv run ruff check .
uv run basedpyright
uv run pytest