Synth-mapping-helper

Forgot to publish the last few fixes

Difficulty selector now works, added `--window-size=1600x900` parameter

This adds a GUI that is designed as a "second screen" for the editor. See https://github.com/adosikas/synth_mapping_helper/wiki/Companion for details.

Also fixes some bugs.

Splits `--plot` of finalize script into `--plot-notes` and `--plot-walls`

Walls will now be marked orange when they will despawn due to the limit of 80(pc) or 40(quest) walls in the visible area (4 seconds).
Thanks to Marinus and Infranscia for doing the science behind that.

Adds [`--swap-hands`](https://github.com/adosikas/synth_mapping_helper/wiki/Pre--and-Post-Processing-Options#swap-hands)

Plot now shows walls, and they are colored red when they would be hidden on quest