[#3] Trigger CI when a PR changes from draft to ready

[elBoberido]

Notes for Reviewer

The handling of draft PR is improved and the CI is fully skipped instead of resulting in a failure, which spams the github notifications.

Additionally, with this change, it is sufficient to set a PR to Ready for review in order to trigger the CI instead of having to do a dummy push.

Finally, the line breaks in bullet lists are also visible in the rendered markdown. Therefore the line limitation is suppressed for the PR template.

Prevent CI from running on each commit while the work is still in progress

• Set the PR to a draft status, e.g. by the Convert to draft link, to indicate
  that the work is not yet ready for review
• Once the PR is ready for review, press the Ready for Review button and push
  a final commit to trigger the CI

Pre-Review Checklist for the PR Author

• Add sensible notes for the reviewer
• PR title is short, expressive and meaningful
• Relevant issues are linked in the References section
• Every source code file has a copyright header with
  SPDX-License-Identifier: Apache-2.0 OR MIT
• Branch follows the naming format (iox2-123-introduce-posix-ipc-example)
• Commits messages are according to this guideline
  • Commit messages have the issue ID ([#123] Add posix ipc example)
  • Commit author matches Eclipse Contributor Agreement(and ECA is signed)
• Tests follow the best practice for testing
• Changelog updated in the unreleased section including API
  breaking changes
• Assign PR to reviewer
• All checks have passed (except task-list-completed)

Checklist for the PR Reviewer

• Commits are properly organized and messages are according to the guideline
• Unit tests have been written for new behavior
• Public API is documented
• PR title describes the changes

Post-review Checklist for the PR Author

• All open points are addressed and tracked via issues

References

Relates to #3

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.13%. Comparing base (0ad8d53) to head (d6dfbf3).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #542   +/-   ##
=======================================
  Coverage   79.13%   79.13%           
=======================================
  Files         202      202           
  Lines       24887    24887           
=======================================
  Hits        19695    19695           
  Misses       5192     5192           

see 3 files with indirect coverage changes