New settings widgets (Number, Checkbox, Enum)

[FlooferLand]

This PR separates the checkbox settings widget into its own thing (CheckboxPreferenceItem) and adds a NumberPreferenceItem and an EnumPreferenceItem

Code usage examples:

// Creates a new NumberPreferenceItem set up to handle percentages
createPrefItemPercentage('Note hit sound volume', 'Enable to play a click sound when hitting notes', function(value:Int):Void {
  Preferences.noteHitSoundVolume = value;
  var hitSound:String = Preferences.noteHitSound + "Hit";
  FunkinSound.playOnce(Paths.sound('noteHitSounds/${hitSound}') ?? Paths.sound('noteHitSounds/pingPongHit'));
}, Preferences.noteHitSoundVolume);

// NoteHitSoundType would be a string enum defined in MenuItemEnums.hx
createPrefItemEnum('Note hit sound', 'Enable to play a click sound when hitting notes', [
  NoteHitSoundType.None => "None",
  NoteHitSoundType.PingPong => "Ping pong",
  NoteHitSoundType.VineBoom => "Vine boom"
], function(value:String):Void {
  Preferences.noteHitSound = value;
  var hitSound:String = value + "Hit";
  FunkinSound.playOnce(Paths.sound('noteHitSounds/${hitSound}') ?? Paths.sound('noteHitSounds/pingPongHit'));
}, Preferences.noteHitSound);

// Simple checkbox, not much changed
createPrefItemCheckbox('Note splashiness', 'Disable to remove splash animations when hitting notes', function(value:Bool):Void {
  Preferences.noteSplash = value;
}, Preferences.noteSplash);

// There is also createPrefItemNumber, but I cannot be bothered to write an example for it as I paused mid-episode while watching Doctor Who to make this PR 🗿

* The callbacks get called every time the player changes the value, mainly for you to update the value inside Preferences, but its possible to use them for example to play a sound effect to let the user preview the volume of a sound every time they change the volume

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This PR splits off features from #2793 as requested by @EliteMasterEric
Part of NumberPreferenceItem was implemented by @lemz1

[EliteMasterEric]

Going to review this immediately because this would save us a whole load of time if it works good.

[EliteMasterEric]

This worked great for me, it's really convenient to work with. I'll try to get this in and then implement some new options using it.