fix: Support arbitrary angle Molmer-Sorenson gate.

[kshyatt-aws]

Issue #, if available: N/A

Description of changes: change MS gate to support 3 angles.

Testing done: Unit tests passed locally.

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[codecov-commenter]

Codecov Report

Patch coverage: 43.47% and project coverage change: -0.05% ⚠️

Comparison is base (d1cd7e8) 95.76% compared to head (8b8aa82) 95.71%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #62      +/-   ##
==========================================
- Coverage   95.76%   95.71%   -0.05%     
==========================================
  Files          35       35              
  Lines        4039     4040       +1     
==========================================
- Hits         3868     3867       -1     
- Misses        171      173       +2     

Files Changed	Coverage Δ
src/gate_applicators.jl	72.97% <9.09%> (ø)
src/gates.jl	93.33% <70.00%> (-1.34%)	⬇️
src/raw_schema.jl	94.57% <100.00%> (-0.19%)	⬇️

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