+ Uninstaller for sillytavern + extras
+ Changed conda env to extras (from sillytavernextras) to fit the docs
+ Improved backend menu functions (removes the elif mess)
+ Function to find a suitable terminal emulator when launching sillytavern or extras
+ Added tutorial on how to use it
+ fixes ffmpeg installation (will pull the 7z at current script location instead of %temp%)
+ fixed shortcutTarget name
+ removed requirements-complete
+ ask user if they wanna install Coqui
* Added logging with timestamp so you can see how long each command takes
* Added uninstaller in the toolbox menu to completely remove sillytavern + extras
* Fixed launcher shortcut not being created correctly
* Small functions name cleanup
* removed brance switch for extras since its only main
* added menu titles
* backup now creates new folder at root of where script is located instead of inside sillytavern folder
