PraseTja: Add branches

- Needs the following changes to the database: change `easy`, `normal`, `hard`, and `oni` to `TEXT` type
- When adding songs to the database and if, for example, a song's 7-star difficulty has a branch, instead of `7` input `7 B`, this is to display song's branch support on the song selection
- Branch can be forced in debug

public/src/js/keyboard.js

@@ -199,8 +199,8 @@ class Keyboard{
 			if(
 				sound === "don"
 				&& circle
-				&& !circle.getPlayed()
-				&& circle.getType() === "balloon"
+				&& !circle.isPlayed
+				&& circle.type === "balloon"
 				&& circle.requiredHits - circle.timesHit <= 1
 			){
 				this.controller.playSound("se_balloon")