Add support for Piccolo

[goerz]

(WIP)

[codecov]

Codecov Report

❌ Patch coverage is 0% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 87.1%. Comparing base (1ece6f0) to head (caa6461).
⚠️ Report is 8 commits behind head on master.

Files with missing lines	Patch %	Lines
ext/QuantumControlPiccoloExt.jl	0.0%	8 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           master    #106     +/-   ##
========================================
- Coverage    87.7%   87.1%   -0.6%     
========================================
  Files          20      21      +1     
  Lines        1123    1131      +8     
========================================
  Hits          984     984             
- Misses        139     147      +8     

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