action wait_for_message_count

[fred-labs]

Description

Add action wait_for_message_count to monitor a ROS topic and exit after a certain amount of messages was received.

Pull request checklist

• Issue created that explains the change and why it's needed
• Tests are part of the PR (for bug fixes / features)
• Docs reviewed and added / updated if needed (for bug fixes / features)
• Format and Lint checks (make check) pass locally
• PR applies Apache 2.0 License to all code files

Pull request type

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation changes
• Other (please describe)

Current behavior

New behavior

How to test

[github-actions]

Test Results

203 tests   188 ✅  25m 58s ⏱️
  9 suites   14 💤
  9 files      1 ❌

Results for commit 87293fa.

♻️ This comment has been updated with latest results.

[github-actions]

Scenario Results

8 tests   8 ✅  11m 38s ⏱️
7 suites  0 💤
7 files    0 ❌

Results for commit 2111517.