[FEAT] Allow RawImage to read from all types of supported sources. (#1244)

* Allow RawImage to read from all types of supported sources.
This will be useful for the pipeline API.

* Update pipeline to allow for the new types.
Update types for Background Removal pipeline to use same options as Image Segmentation Pipeline.

* Revert background removal pipeline options change

* Use `BackgroundRemovalPipelineType`

* Check for existence of canvas classes before instanceof check

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Co-authored-by: Joshua Lochner <[email protected]>

Author: BritishWerewolf