Added addon selection to Markdown templates and changed to YAML format

[MSACC]

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[changeset-bot]

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Latest commit: bb4c045

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 40.48%. Comparing base (230b46d) to head (bb4c045).
⚠️ Report is 8 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #313   +/-   ##
=======================================
  Coverage   40.48%   40.48%           
=======================================
  Files           2        2           
  Lines         615      615           
  Branches      151      151           
=======================================
  Hits          249      249           
  Misses        295      295           
  Partials       71       71           

Flag	Coverage Δ
unit	40.48% <ø> (ø)

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[boazpoolman]

LGTM!