Fix compile issues

[EliasLF]

Description

• Bumped the minimum required version of CMAKE to 3.19 (to enable the use of find_package_check_version)
• Fixed issue in CMAKE when z3 python root path is empty
• replaced std::regex_match with std::regex_search in the loading of coupling maps for a more lenient handling of white spaces in coupling map files

[burgholzer]

Many thanks for these bugfixes!

Could you please resolve the conflicts in this PR so that CI starts properly?
The main branch has seen some recent additions. Maybe your fork got out of sync.

The changes themselves look good to me.
There are two spots in the documentation left, where it still refers to CMake 3.18:

https://github.com/cda-tum/qmap/blob/main/docs/source/Installation.rst

https://github.com/cda-tum/qmap/blob/main/docs/source/DevelopmentGuide.rst#working-on-the-core-c-library

Would be great to change those as well.

[burgholzer]

Furthermore, please merge the mainbranch in after #165 is merged. This contains some bugfixes that made a couple of our tests fail.

[codecov]

Codecov Report

Merging #159 (e90c291) into main (710035b) will not change coverage.
The diff coverage is 100.0%.

@@          Coverage Diff          @@
##            main    #159   +/-   ##
=====================================
  Coverage   91.8%   91.8%           
=====================================
  Files         24      24           
  Lines       2099    2099           
  Branches     414     414           
=====================================
  Hits        1927    1927           
  Misses       172     172           

Flag	Coverage Δ
cpp	91.2% <100.0%> (ø)
python	94.2% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/Architecture.cpp	95.2% <100.0%> (ø)

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[EliasLF]

The CI problems have been fixed now. Thank you for the pointer, it was really due to the fork being out of sync.

Also changed the 2 mentions of CMAKE versions in the documentation, that I missed.

[burgholzer]

Many thanks. Good to have these out of the way!