Add release tags for standalone branch

[Flamefire]

For each release commit "vX.Y" a "standalone-vX.Y" tag will be created at
the corresponding commit on the "standalone" branch.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.16%. Comparing base (a03b999) to head (7fee09b).
⚠️ Report is 4 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #203   +/-   ##
========================================
  Coverage    99.16%   99.16%           
========================================
  Files           34       34           
  Lines         3340     3340           
========================================
  Hits          3312     3312           
  Misses          28       28           

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