Add function to draw rectangle with different color for issue #226

[Cheese-Bar]

PR Details

Description

• Allow user to use imageComparison.setDrawDifferentColorFlag(true) to draw rectangle with different color according to different ratio of different pixels in a rectangle.
• Two test case are added to verify this function.

Related Issue

• [IMPROVEMENT] Allow it to draw rectangle with different color according to different ratio of different pixels. #226

Motivation and Context

• A more diverse presentation might give users a better experience.

How Has This Been Tested

• Rectangle implementations of different shades of color were tested
• Enabling and disabling this feature was tested

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.