Dave Allie 2a27c6d068
Add JPG image support (#23)
## Summary

- Add basic JPG image support
- Map JPG back to 2-bit BMP output
- Can be used to later render the BMP file from disk or directly pass to
output if wanted
- Give the 3 passes over the data needed to render grayscale content,
putting it on disk is preferred to outputting it multiple times

## Additional Context

- WIP, looking forward to BMP support from
https://github.com/daveallie/crosspoint-reader/pull/16
- Addresses some of #11
2025-12-21 17:15:17 +11:00
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2025-12-21 17:15:17 +11:00