Create testflight.yml

[colinbrash]

WIP

[codecov]

Codecov Report

Merging #1498 (9c4277a) into master (247be09) will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master   #1498   +/-   ##
======================================
  Coverage      50%     50%           
======================================
  Files         453     453           
  Lines       30057   30057           
======================================
  Hits        15266   15266           
  Misses      14791   14791           

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