Difficulty based scripts (#623)

Makes possible things like `songs/dadbattle/scripts/erect/`.

* exclusive difficulty scripts

* fixing a small ordering bug + optimization

* actually, allowing both scripts to exist

* im a super fucking dumbass

* SPACES!!!

* suggestion from sen

---------

Co-authored-by: ⍚~Nex <[email protected]>

Author: HeroEyad

source/funkin/game/PlayState.hx

@@ -609,10 +609,11 @@ class PlayState extends MusicBeatState
 				// case "":
 					// ADD YOUR HARDCODED SCRIPTS HERE!
 				default:
-					var scriptsFolders:Array<String> = ['songs/${SONG.meta.name.toLowerCase()}/scripts', 'data/charts/', 'songs/'];
+					var normal = 'songs/${SONG.meta.name.toLowerCase()}/scripts';
+					var scriptsFolders:Array<String> = [normal, normal + '/$difficulty/', 'data/charts/', 'songs/'];
 
-					for(folder in scriptsFolders) {
-						for(file in Paths.getFolderContent(folder, true, fromMods ? MODS : BOTH)) {
+					for (folder in scriptsFolders) {
+						for (file in Paths.getFolderContent(folder, true, fromMods ? MODS : BOTH)) {
 							if (folder == 'data/charts/')
 								Logs.trace('data/charts/ is deprecrated and will be removed in the future. Please move script $file to songs/', WARNING, DARKYELLOW);