Gacha banner tweaks

Removed min/maxItemType
Added configurable base weight values for banners

src/main/java/emu/grasscutter/game/gacha/GachaBanner.java

@@ -16,8 +16,8 @@ public class GachaBanner {
 	private int sortId;
 	private int[] rateUpItems1;
 	private int[] rateUpItems2;
-	private int minItemType = 1;
-	private int maxItemType = 2;
+	private int baseYellowWeight = 60; // Max 10000
+	private int basePurpleWeight = 510; // Max 10000
 	private int eventChance = 50; // Chance to win a featured event item
 	private int softPity = 75;
 	private int hardPity = 90;
@@ -63,6 +63,14 @@ public class GachaBanner {
 		return sortId;
 	}
 
+	public int getBaseYellowWeight() {
+		return baseYellowWeight;
+	}
+
+	public int getBasePurpleWeight() {
+		return basePurpleWeight;
+	}
+
 	public int[] getRateUpItems1() {
 		return rateUpItems1;
 	}
@@ -70,14 +78,6 @@ public class GachaBanner {
 	public int[] getRateUpItems2() {
 		return rateUpItems2;
 	}
-
-	public int getMinItemType() {
-		return minItemType;
-	}
-	
-	public int getMaxItemType() {
-		return maxItemType;
-	}
 	
 	public int getSoftPity() {
 		return softPity - 1;