applied new qt ressource icon creation

[seb5g]

from https://stackoverflow.com/a/66104687/8090831

get rid of file with all png encoded as bytes

[codecov]

Codecov Report

Attention: Patch coverage is 70.00000% with 6 lines in your changes missing coverage. Please review.

Project coverage is 63.79%. Comparing base (760848c) to head (bf21a89).
Report is 4 commits behind head on 5.0.x_dev.

Files with missing lines	Patch %	Lines
src/pymodaq_gui/utils/widgets/tree_layout.py	0.00%	3 Missing ⚠️
src/pymodaq_gui/utils/widgets/push.py	0.00%	2 Missing ⚠️
src/pymodaq_gui/plotting/utils/filter.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##           5.0.x_dev      #45      +/-   ##
=============================================
- Coverage      63.82%   63.79%   -0.03%     
=============================================
  Files             67       66       -1     
  Lines           8172     8157      -15     
=============================================
- Hits            5216     5204      -12     
+ Misses          2956     2953       -3     

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