Remove virtac

[ptsOSL]

This PR splits virtac from atip and removes virtac source code and docs. It is mirrored by a similar PR in the virtac repository which removes atip code from the virtac repo.

-Mostly minor changes, other than the deletion of the virtac source code

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.28%. Comparing base (f570406) to head (b9a31fc).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #50   +/-   ##
=======================================
  Coverage   89.28%   89.28%           
=======================================
  Files           6        6           
  Lines         392      392           
=======================================
  Hits          350      350           
  Misses         42       42           

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