🔥 Remove Snapshot and ShowProbabilities instructions from MQT Core

[burgholzer]

Description

Removed the parsing and creation of Snapshot and ShowProbabilities instructions from QASMParser and NonUnitaryOperations due to their irrelevance within MQT Core. This eliminates unnecessary error checking and streamlining the codebase. NonUnitaryOperation no longer needs to account for Snapshot and ShowProbabilities, simplifying its logic. The operations were also removed from related files and tests to maintain consistency.

Checklist:

• The pull request only contains commits that are related to it.
• I have added appropriate tests and documentation.
• I have made sure that all CI jobs on GitHub pass.
• The pull request introduces no new warnings and follows the project's style guidelines.

[codecov]

Codecov Report

Merging #393 (84efd9e) into main (bd41474) will increase coverage by 0.1%.
Report is 1 commits behind head on main.
The diff coverage is 90.6%.

@@           Coverage Diff           @@
##            main    #393     +/-   ##
=======================================
+ Coverage   89.1%   89.2%   +0.1%     
=======================================
  Files         97      98      +1     
  Lines      11713   11661     -52     
  Branches    2098    2090      -8     
=======================================
- Hits       10445   10411     -34     
+ Misses      1268    1250     -18     

Files Changed	Coverage Δ
include/operations/NonUnitaryOperation.hpp	100.0% <ø> (+2.5%)	⬆️
include/operations/OpType.hpp	89.4% <ø> (+3.6%)	⬆️
src/parsers/QASMParser.cpp	97.8% <ø> (+0.7%)	⬆️
src/CircuitOptimizer.cpp	84.0% <40.0%> (+<0.1%)	⬆️
include/dd/FunctionalityConstruction.hpp	100.0% <100.0%> (ø)
include/dd/Operations.hpp	83.5% <100.0%> (-0.1%)	⬇️
src/dd/Operations.cpp	100.0% <100.0%> (ø)
src/operations/NonUnitaryOperation.cpp	95.3% <100.0%> (+4.3%)	⬆️

... and 2 files with indirect coverage changes

[github-actions]

Cpp-Linter Report ✔️

No problems need attention.

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