[pontos-release] Fix dev version/releasing of Python Projects | Refactor/Move some code

[y0urself]

What:

• Fix dev version/releasing of Python Projects
• You can use both --develop or a version with x.x.x.dev1 to set a develop version

Why:

• The develop version has not been set correctly before.
• Make the behavior of C and Python version editing more equal

How:

(.venv) bash-3.2$ pontos-version update --develop 21.6.10.dev1
Version is already up-to-date.
(.venv) bash-3.2$ pontos-version update --develop 21.6.10.dev2
Updated version from 21.6.10.dev1 to 21.6.10.dev2
(.venv) bash-3.2$ pontos-version update --develop 21.6.10.dev1
Updated version from 21.6.10.dev2 to 21.6.10.dev1
(.venv) bash-3.2$ pontos-version update --develop 21.6.10
Version is already up-to-date.

Checklist:

• Tests
• CHANGELOG Entry
• Documentation

[codecov]

Codecov Report

Merging #141 (d3e9906) into master (56a4d58) will decrease coverage by 0.27%.
The diff coverage is 80.61%.

@@            Coverage Diff             @@
##           master     #141      +/-   ##
==========================================
- Coverage   88.41%   88.13%   -0.28%     
==========================================
  Files          11       11              
  Lines         820      826       +6     
  Branches      125      126       +1     
==========================================
+ Hits          725      728       +3     
- Misses         65       68       +3     
  Partials       30       30              

Impacted Files	Coverage Δ
pontos/version/cmake_version.py	85.38% <37.50%> (-3.24%)	⬇️
pontos/version/version.py	76.27% <64.70%> (-2.75%)	⬇️
pontos/release/helper.py	79.83% <81.39%> (+0.82%)	⬆️
pontos/release/release.py	91.77% <100.00%> (-0.06%)	⬇️
pontos/version/__version__.py	100.00% <100.00%> (ø)
pontos/version/helper.py	100.00% <100.00%> (+18.18%)	⬆️

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