feat: add tox

[Pog3k]

@sebastianpfischer pls rebuild the docker container for me an upload it.

Jenkins stage will Follow

[codecov]

Codecov Report

Merging #229 (5373857) into master (4e55627) will increase coverage by 0.09%.
The diff coverage is n/a.

❗ Current head 5373857 differs from pull request most recent head 598d80f. Consider uploading reports for the commit 598d80f to get more accurate results

@@            Coverage Diff             @@
##           master     #229      +/-   ##
==========================================
+ Coverage   95.43%   95.53%   +0.09%     
==========================================
  Files          72       73       +1     
  Lines        5542     5706     +164     
==========================================
+ Hits         5289     5451     +162     
- Misses        253      255       +2     

Impacted Files	Coverage Δ
src/pykiso/test_coordinator/test_execution.py	97.51% <0.00%> (-0.52%)	⬇️
src/pykiso/test_coordinator/test_suite.py	99.02% <0.00%> (ø)
src/pykiso/lib/auxiliaries/ykush_auxiliary.py	99.29% <0.00%> (ø)
src/pykiso/test_result/text_result.py	97.65% <0.00%> (+0.28%)	⬆️

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