Fixed dungeon challenge scoreboard and implement dungeon drops

Also fixed a few dungeon script handlers

src/main/java/emu/grasscutter/data/common/ItemParamStringData.java

@@ -0,0 +1,26 @@
+package emu.grasscutter.data.common;
+
+public class ItemParamStringData {
+	private int Id;
+    private String Count;
+
+    public ItemParamStringData() {}
+
+	public int getId() {
+		return Id;
+	}
+
+	public String getCount() {
+		return Count;
+	}
+	
+	public ItemParamData toItemParamData() {
+		if (Count.contains(";")) {
+			String[] split = Count.split(";");
+			Count = Count.split(";")[split.length - 1];
+		} else if (Count.contains(".")) {
+			return new ItemParamData(Id, (int) Math.ceil(Double.parseDouble(Count)));
+		}
+		return new ItemParamData(Id, Integer.parseInt(Count));
+	}
+}