[docs]: Update CONTRIBUTING.md

[aguilar1x]

[x] Close #77

Description

Update/add Contributing.md

Checklist

• The title of the PR is clear and descriptive.
• All tests have been run and passed.
• Code follows project conventions (Biome formatting, linting).
• Documentation has been updated as needed.
• Commit messages follow the Conventional Commits style.

Type of Change

• Bugfix
• Feature
• Refactor
• Chore
• Documentation
• Test

Testing

N/A

Automated Tests

N/A

Additional Notes

Update/add Contributing.md

[vercel]

@aguilar1x is attempting to deploy a commit to the CofiBlocks Team on Vercel.

A member of the Team first needs to authorize it.

[evgongora]

LGTM, tysm!