gui.comboBox: replace *args with argument list

[janezd]

Issue

Orange.widgets.gui redefines comboBox, but uses *args and **kwargs for arguments, so we can't get any assistance from GUIs.

Requires https://github.com/biolab/orange-widget-base/pull/203 to be merged and released.

Description of changes

List arguments. Also add a tooltips argument, which is why it requires a new release of orange-widget-base.

Includes

• [X] Code changes

[codecov[bot]]

Codecov Report

Merging #6013 (78b63fe) into master (b1aa139) will decrease coverage by 0.00%. The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6013      +/-   ##
==========================================
- Coverage   86.46%   86.46%   -0.01%     
==========================================
  Files         315      315              
  Lines       67600    67608       +8     
==========================================
+ Hits        58448    58454       +6     
- Misses       9152     9154       +2