A few improvements

[TheZoc]

Hi @AndBondStyle :)

Here are the changes I made a few months ago. I'm happy to subdivide them into smaller PRs if you prefer, but I'm unable to do substantial changes due to time constraints on my side.

These were tested on my Niimbot B1 and seem to work well :)

Changes for this PR:

• Fixes #12, where printer stickers are not printing completely
• Added USB Serial Port auto-detection of model
• Made a small change on include paths, so it doesn't require PYTHONDIR (or Poetry) to run. I'm happily running this in a local venv
• I upgraded pillow to 10.3 - I remember I ran into an issue with the old one, but I can't recall which one now.

Please let me know if you want me to change something before merging

[MultiMote]

You can detect model by sending GetInfo packet. See this.

Also checked port serial numbers of my devices:

• B1 - B1-G32707118
• D110 - 00000000050C