fix: formatting conventional commit messages and fix some pre-commit breakage #1935

[yesudeep]

Pre-commits were failing for some folks; this should fix them.

ISSUE: #1935

CHANGELOG:

• Reverts snake_casing of some fields that broke genkit start.
• Addresses error handling and parallelized formatting for toml files.
• Configures the ruff formatter to use requested format.
• Clean up some lint.
• Update copyright headers in files missing them.
• Add scripts to add and check license headers.
• Add checks to ensure we have a conventional commit message format.
• Add a commit message template that uses the conventional commit messafe format.
• Add biomejs configuration for later use.

Checklist (if applicable):

• PR title is following https://www.conventionalcommits.org/en/v1.0.0/
• Tested (manually, unit tested, etc.)
• Docs updated (updated docs or a docs bug required)