ci: setup mos api e2e email target

[jayzhang]

https://msazure.visualstudio.com/Microsoft%20Teams%20Extensibility/_workitems/edit/31761750

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.36%. Comparing base (4af7d40) to head (2bfcaff).
Report is 3 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev   #13420   +/-   ##
=======================================
  Coverage   90.36%   90.36%           
=======================================
  Files         618      618           
  Lines       36984    36984           
  Branches     7336     7280   -56     
=======================================
  Hits        33419    33419           
  Misses       1535     1535           
  Partials     2030     2030           

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