docs: new readme for create agent+add-in template

[Rick-Kirkham]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.00%. Comparing base (dc62095) to head (8f90b5e).
Report is 12 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev   #14269      +/-   ##
==========================================
- Coverage   90.02%   90.00%   -0.03%     
==========================================
  Files         647      647              
  Lines       38867    38781      -86     
  Branches     7796     7783      -13     
==========================================
- Hits        34991    34904      -87     
- Misses       1756     1759       +3     
+ Partials     2120     2118       -2     

see 39 files with indirect coverage changes

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[mattgeim]

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