chore(docs): update CONTRIBUTING.md with additional information

[avivkeller]

Let's give new users as much information as we can in order to set them up for success.

[Copilot]

Pull Request Overview

This PR updates the CONTRIBUTING.md file to provide additional guidance and detail for new contributors. Key changes include the addition of a detailed table of contents, expanded sections on setup, development workflow, testing, code quality, and commit guidelines.

Comments suppressed due to low confidence (1)

CONTRIBUTING.md:96

• There seems to be an extra space in the command flag; consider correcting it to 'node --run test:coverage' to prevent confusion when copying the command.

node -- run test:coverage # To check code coverage

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 48.90%. Comparing base (440da36) to head (a3f4747).
Report is 7 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #310   +/-   ##
=======================================
  Coverage   48.90%   48.90%           
=======================================
  Files          82       82           
  Lines        6825     6825           
  Branches      277      277           
=======================================
  Hits         3338     3338           
  Misses       3484     3484           
  Partials        3        3           

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[AugustinMauroy]

LGMT !