Add gates.gate.CCZ

[renatomello]

Checklist:

• Reviewers confirm new code works as expected.
• Tests are passing.
• Coverage does not decrease.
• Documentation is updated.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.82%. Comparing base (363a6e5) to head (d3e529d).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1280   +/-   ##
=======================================
  Coverage   99.82%   99.82%           
=======================================
  Files          72       72           
  Lines       10560    10580   +20     
=======================================
+ Hits        10541    10561   +20     
  Misses         19       19           

Flag	Coverage Δ
unittests	99.82% <100.00%> (+<0.01%)	⬆️

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[MatteoRobbiati]

Thanks! A comment follows.

[AlejandroSopena]

@BrunoLiegiBastonLiegi @MatteoRobbiati Tests are passing. I think it is ready.

[MatteoRobbiati]

Thanks @AlejandroSopena.