chore: Update CONTRIBUTING.md

[zomars]

Summary by mrge

Improved the CONTRIBUTING.md file with clearer guidelines and streamlined structure for contributors. These changes make it easier for new and existing contributors to understand the project's contribution process and requirements.

Refactors

• Restructured the "House Rules" section with clearer guidance on preventing work duplication, working on approved issues, and providing context from private channels.
• Added new sections on PR summarization, using GitHub keywords to link issues, and documenting testing approaches.
• Simplified development setup instructions by linking to the README instead of duplicating information.

Bug Fixes

• Fixed formatting inconsistencies in the priority table for better readability.
• Updated outdated instructions for making pull requests with current best practices.

This PR is part of a stack, managed by mrge:

• main (default branch)
• #19811: feat: Support multiple round-robin host selection
• #20641: chore: Update CONTRIBUTING.md ⬅️ Current PR (View on mrge)

---

What does this PR do?

This pull request includes significant updates to the CONTRIBUTING.md file to improve clarity and guidance for contributors. The changes focus on restructuring sections, enhancing readability, and linking to relevant resources.

Key Changes:

Improvements to contribution guidelines:

• Revised the "House Rules" section to include clearer guidelines on preventing work duplication, working only on approved issues, and providing context from private channels.
• Added new sections on summarizing PRs, using GitHub keywords to auto-link issues, and mentioning what was tested.
• Updated the "Making a Pull Request" section to include a link to the App Contribution Guidelines and instructions on keeping branches updated.

Simplification and linking to external resources:

• Replaced detailed development setup instructions with a link to the README for development and e2e testing. [1] [2]

These changes aim to streamline the contribution process and ensure that all necessary information is easily accessible to contributors.

Mandatory Tasks (DO NOT REMOVE)

• I have self-reviewed the code (A decent size PR without self-review might be rejected).
• I have updated the developer docs in /docs if this PR makes changes that would require a documentation change. If N/A, write N/A here and check the checkbox.
• I confirm automated tests are in place that prove my fix is effective or that my feature works.

[cubic-dev-ai]

Review this PR on mrge.io

[github-actions]

Hey there and thank you for opening this pull request! 👋🏼

We require pull request titles to follow the Conventional Commits specification and it looks like your proposed title needs to be adjusted.

Details:

No release type found in pull request title "Update CONTRIBUTING.md". Add a prefix to indicate what kind of release this pull request corresponds to. For reference, see https://www.conventionalcommits.org/

Available types:
 - feat: A new feature
 - fix: A bug fix
 - docs: Documentation only changes
 - style: Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc)
 - refactor: A code change that neither fixes a bug nor adds a feature
 - perf: A code change that improves performance
 - test: Adding missing tests or correcting existing tests
 - build: Changes that affect the build system or external dependencies (example scopes: gulp, broccoli, npm)
 - ci: Changes to our CI configuration files and scripts (example scopes: Travis, Circle, BrowserStack, SauceLabs)
 - chore: Other changes that don't modify src or test files
 - revert: Reverts a previous commit

[graphite-app]

Graphite Automations

"Add foundation team as reviewer" took an action on this PR • (04/09/25)

1 reviewer was added to this PR based on Keith Williams's automation.

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2 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
cal	⬜️ Ignored (Inspect)	Visit Preview		Apr 10, 2025 2:00am
calcom-web-canary	⬜️ Ignored (Inspect)	Visit Preview		Apr 10, 2025 2:00am

[zomars]

Removed this as this shouldn't be a problem since we don't use the submodule approach anymore

[emrysal]

Big fan of this! Lgtm