⬆️ update mqt-core

[burgholzer]

Description

This PR updates the mqt-core submodule and brings in some further advancements from #418.
Specifically, it switches to using FetchContent for obtaining mqt-core (and LogicBlocks).
Per default, it is pointed to the vendored submodule via an overridable CMake variable.

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

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (63eaf08) 93.0% compared to head (6b39462) 92.8%.

Additional details and impacted files

@@           Coverage Diff           @@
##            main    #419     +/-   ##
=======================================
- Coverage   93.0%   92.8%   -0.2%     
=======================================
  Files         48      48             
  Lines       5350    5364     +14     
  Branches     908     911      +3     
=======================================
+ Hits        4976    4979      +3     
- Misses       374     385     +11     

Flag	Coverage Δ
cpp	92.5% <100.0%> (-0.2%)	⬇️
python	95.3% <91.6%> (-0.7%)	⬇️

Files	Coverage Δ
include/DataLogger.hpp	100.0% <100.0%> (ø)
include/Mapper.hpp	85.2% <100.0%> (ø)
include/cliffordsynthesis/CliffordSynthesizer.hpp	88.8% <100.0%> (ø)
include/cliffordsynthesis/Results.hpp	100.0% <100.0%> (ø)
src/DataLogger.cpp	90.2% <100.0%> (ø)
src/cliffordsynthesis/Tableau.cpp	95.6% <ø> (ø)
src/mqt/qmap/clifford_synthesis.py	94.7% <100.0%> (-4.0%)	⬇️
src/mqt/qmap/compile.py	97.1% <100.0%> (-0.2%)	⬇️
src/mqt/qmap/subarchitectures.py	96.3% <75.0%> (ø)

... and 5 files with indirect coverage changes