Motion-Based Background Subtraction

[Luxonis-Brandon]

Start with the why:

Motion-based can be extremely beneficial in CV pipelining. For example motion-based background subtraction can be useful for multi-camera localization of moving objects.

Move to the how:

Leverage #245 and #136 implement motion-based background subtraction on DepthAI directly.

Move to the what:

Support background subtraction as a node in the Gen2 Pipeline Builder.

[manbehindthemadness]

This might be possible using PeterL1n's virtual inference models "RobustBackgroundRemoval" and "BackgroundMatting2"