Add dominant color block WIP

[NickHerrig]

Description

This PR contains an new block called the "Dominant Color" block. This block will find the most common color in an image and return a RGB values in a list.

List any dependencies that are required for this change. scikit-learn is needed for this block.

also added a new type for a batch of integers.

Type of change

Please delete options that are not relevant.

• [ ] Bug fix (non-breaking change which fixes an issue)
• [X] New feature (non-breaking change which adds functionality)
• [ ] This change requires a documentation update