Integrate Clang-Tidy Workflow for DD Package

[hillmich]

This PR introduces a new CI job to check for compliance via Clang Tidy.

This includes checking variable and function names, warnings for C-style casts and a few more.

(Recreated from #103)

[codecov]

Codecov Report

Merging #104 (b5bbcad) into main (7bf880a) will decrease coverage by 0.2%.
The diff coverage is 95.5%.

@@           Coverage Diff           @@
##            main    #104     +/-   ##
=======================================
- Coverage   95.8%   95.5%   -0.3%     
=======================================
  Files         20      20             
  Lines       3800    3844     +44     
=======================================
+ Hits        3641    3674     +33     
- Misses       159     170     +11     

Impacted Files	Coverage Δ
include/dd/Complex.hpp	100.0% <ø> (ø)
include/dd/Edge.hpp	100.0% <ø> (ø)
include/dd/GateMatrixDefinitions.hpp	100.0% <ø> (ø)
include/dd/UnaryComputeTable.hpp	95.2% <75.0%> (-4.8%)	⬇️
include/dd/DensityNoiseTable.hpp	93.3% <80.0%> (-6.7%)	⬇️
include/dd/ComplexValue.hpp	96.6% <81.2%> (-0.8%)	⬇️
include/dd/ComputeTable.hpp	96.5% <88.8%> (+0.5%)	⬆️
include/dd/Package.hpp	91.8% <90.9%> (-0.2%)	⬇️
include/dd/ToffoliTable.hpp	97.5% <92.3%> (-2.5%)	⬇️
include/dd/Export.hpp	95.8% <96.8%> (-0.4%)	⬇️
... and 11 more

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[burgholzer]

Thanks for all the changes! It's great to see consistency across the repository.
I got a couple of minor comments/requests.

Yet to make it through the Package.hpp file. Expect another review of that file soon.

[burgholzer]

Just finished going through the leftover file. Only two small questions/comments there. Overall there should not be much to address here 👍🏻

[burgholzer]

LGTM 👍🏼 Thanks for pushing this!