Introduce a more thorough clean method

[niosus]

Before we would only clean cmake cache and that operation would regularly fail due to a bug in the code. This PR allows to clear all internal cache including the temporary folders generated before.

[codecov]

Codecov Report

Merging #767 (58faf01) into master (3b16eb1) will decrease coverage by 0.85%.
The diff coverage is 27.27%.

@@            Coverage Diff             @@
##           master     #767      +/-   ##
==========================================
- Coverage   82.16%   81.31%   -0.86%     
==========================================
  Files          39       39              
  Lines        3319     3328       +9     
==========================================
- Hits         2727     2706      -21     
- Misses        592      622      +30     

Impacted Files	Coverage Δ
plugin/utils/tools.py	89.47% <0.00%> (ø)
plugin/view_config/view_config_manager.py	70.58% <16.66%> (-3.38%)	⬇️
plugin/flags_sources/cmake_file.py	80.89% <50.00%> (-0.93%)	⬇️
plugin/flags_sources/bazel.py	39.28% <0.00%> (-46.43%)	⬇️
plugin/utils/clang_utils.py	73.50% <0.00%> (-4.64%)	⬇️
plugin/utils/catkinizer.py	54.21% <0.00%> (-3.62%)	⬇️

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