Implement dialogs to edit valueColors for 2 multiColorDots plot types

#59 (closed)

Implement MultiColorDotDialog which is a subclass of EditValueColorDialog to be super class for the 2 following class:

• MultiColorDotLowerEqualDialog is implemented to edit value for multiColorDotsEqualOnLowerBound plot type.
• MultiColorDotUpperEqualDialog is implemented to edit value for multiColorDotsEqualOnUpperBound plot type.

conda.recipe/meta.yaml

 package:
   name: sohviewer
-  version: 2023.1.0.0
+  version: 2023.1.0.1
 
 source:
   path: ../