Synth-mapping-helper

This cleans up some dashboard code and adds some minor features, like segmenting rails based on time (instead of splitting at notes).

There should now also be the `install.bat` and `show_gui_beta.bat` directly below, so you can skip downloading and extracting the `windows_helpers.zip`.

Note that the GUI is still in beta, so stuff may break and/or change.
Please leave feedback, either in [GitHub discussions](https://github.com/adosikas/synth_mapping_helper/discussions) or via Discord.

Added a dashboard with most common operations.

Stacking, Spiral and Spikes will be added separately due to their large number of options.

Run `python3 -m synth_mapping_helper.gui` to start and please leave feedback, either in [GitHub discussions](https://github.com/adosikas/synth_mapping_helper/discussions) or via Discord.

Added a dashboard with most common operations.

Stacking, Spiral and Spikes will be added separately due to their large number of options.

Run `python3 -m synth_mapping_helper.gui` to start and please leave feedback, either in [GitHub discussions](https://github.com/adosikas/synth_mapping_helper/discussions) or via Discord.

Add quick run buttons and fix some unexpected behaviors.

Run `python3 -m synth_mapping_helper.gui` to start and please leave feedback, either in [GitHub discussions](https://github.com/adosikas/synth_mapping_helper/discussions) or via Discord.

This includes a (beta-version) GUI for running commands (replacements for `smh.bat`), adjusting file BPM and merging multiple files into one.

Run `python3 -m synth_mapping_helper.gui` to start and please leave feedback.

This replaces the guesswork-interpolation with one matching the editor and game much more closely.

Also adds [`--snap-singles-to-rail`](https://github.com/adosikas/synth_mapping_helper/wiki/Pre--and-Post-Processing-Options#snap-single-notes-to-rails)