feat: Allow Programs and OpenQASM strings in ProgramSet

[speller26]

This effectively allows splitting to be done on raw program sets.

Issue #, if available:

Description of changes:

Testing done:

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (72f812e) to head (85d0047).

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #1347   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          171       171           
  Lines        11594     11647   +53     
  Branches      1518      1539   +21     
=========================================
+ Hits         11594     11647   +53     

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