iox-#1982 Update release notes for FreeRTOS support

[elBoberido]

Pre-Review Checklist for the PR Author

1. Code follows the coding style of CONTRIBUTING.md
2. Tests follow the best practice for testing
3. Changelog updated in the unreleased section including API breaking changes
4. Branch follows the naming format (iox-123-this-is-a-branch)
5. Commits messages are according to this guideline
   • Commit messages have the issue ID (iox-#123 commit text)
   • Commit author matches Eclipse Contributor Agreement (and ECA is signed)
6. Update the PR title
   • Follow the same conventions as for commit messages
   • Link to the relevant issue
7. Relevant issues are linked
8. Add sensible notes for the reviewer
9. All checks have passed (except task-list-completed)
10. All touched (C/C++) source code files from iceoryx_hoofs are added to ./clang-tidy-diff-scans.txt
11. Assign PR to reviewer

Notes for Reviewer

Checklist for the PR Reviewer

This PR adds the release notes for the FreeRTOS support

• Commits are properly organized and messages are according to the guideline
• Code according to our coding style and naming conventions
• Unit tests have been written for new behavior
• Public API changes are documented via doxygen
• Copyright owner are updated in the changed files
• All touched (C/C++) source code files from iceoryx_hoofs have been added to ./clang-tidy-diff-scans.txt
• PR title describes the changes

Post-review Checklist for the PR Author

1. All open points are addressed and tracked via issues

References

• Closes Implement iceoryx platform for FreeRTOS #1982

[codecov]

Codecov Report

Merging #2002 (108fc3a) into master (7a5d86b) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2002   +/-   ##
=======================================
  Coverage   74.31%   74.31%           
=======================================
  Files         414      414           
  Lines       16086    16086           
  Branches     2249     2249           
=======================================
+ Hits        11954    11955    +1     
  Misses       3416     3416           
+ Partials      716      715    -1     

Flag	Coverage Δ
unittests	74.10% <ø> (+<0.01%)	⬆️
unittests_timing	14.89% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

see 1 file with indirect coverage changes