Release: Add Trunk based Development Workflow

[Samk13]

:heart: Thank you for your contribution!

Description

This pull request adds documentation for the "Trunk based Development" as discussed by the community on Discord.

Checklist

Ticks in all boxes and 🟢 on all GitHub actions status checks are required to merge:

• [ ] I'm aware of the code of conduct.
• [ ] I've created logical separate commits and followed the commit message format.
• [ ] I've added relevant test cases.
• [ ] I've added relevant documentation.
• [ ] I've marked translation strings.
• [ ] I've identified the copyright holder(s) and updated copyright headers for touched files (>15 lines contributions).
• [ ] I've NOT included third-party code (copy/pasted source code or new dependencies).
  • If you have added third-party code (copy/pasted or new dependencies), please reach out to an architect.

Frontend

• [ ] I've followed the CSS/JS and React guidelines.
• [ ] I've followed the web accessibility guidelines.
• [ ] I've followed the user interface guidelines.

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[Samk13]

One risk I've seen in v12 is how easy it is to lose track of which commits need backporting. Maybe clear labeling or automated tracking should be introduced. Let’s discuss this in our upcoming meeting to see how we can improve, or maybe look for alternatives e.g. Gitflow or Release Flow etc...