Add functionality for drawing shapes on images

## Desired behavior
It would be nice to give users a way to draw shapes on images, if there's need/interest for it. I imagine that this would be useful for debugging applications, but perhaps there are also other use cases for this functionality.

## Alternatives considered
OpenCV provides methods for doing things like drawing shapes on images. We could add OpenCV as a dependency and provide an API that wraps these OpenCV calls, but this seems like an overkill dependency for functionality that is probably targeted more towards debugging.

## Implementation suggestion
Another option would be to create/implement some simple methods like `DrawLine` or `DrawCircle` that modify the image pixel data at user-defined locations to be a color specified by the user.

## Additional context
Here's a tutorial from OpenCV that showcases some of the methods they have for drawing shapes on images: https://opencv-tutorial.readthedocs.io/en/latest/draw/draw.html

The issue names no files, tests, or entry points. Start by locating the image abstraction and its pixel-data APIs, then assess how proposed DrawLine and DrawCircle methods would fit without adding OpenCV. Done would mean an agreed scope and API for drawing user-colored shapes on images.

Written by the indexing model from the issue text.