(LK-C-4) Add controlled QubitUnitary support to Lightning Kokkos

[josephleekl]

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---

Context:

Description of the Change:
This PR adds support for controlled QubitUnitary for Lightning Kokkos. There are specialized implementations for 1/2/3-qubits (applyNC1/2/3QubitOpFunctor) and a general case implementation (NCMultiQubitOpFunctor). These functors are defined in MatrixGateFunctors.hpp. These are called by applyControlledMatrix or applyOperation/applyNCMultiQubitOp in StateVectorKokkos.hpp

Benefits:

Possible Drawbacks:

Related GitHub Issues:

[sc-76776]

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[codecov]

Codecov Report

Attention: Patch coverage is 99.12791% with 3 lines in your changes missing coverage. Please review.

Project coverage is 97.53%. Comparing base (bc9d408) to head (ce9250e).

Files with missing lines	Patch %	Lines
...nylane_lightning/lightning_kokkos/_state_vector.py	0.00%	3 Missing ⚠️

Additional details and impacted files

@@                      Coverage Diff                       @@
##           lk-control-gate-NQ-multiRZ     #955      +/-   ##
==============================================================
+ Coverage                       97.32%   97.53%   +0.21%     
==============================================================
  Files                             215      215              
  Lines                           31229    31571     +342     
==============================================================
+ Hits                            30393    30793     +400     
+ Misses                            836      778      -58     

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