Added the poison berry and the slow berry

I know these werent in 1.0.2 but I think the game would just be more fun
if these were in the game. Also they don't do anything yet but I will
add logic for them soon.

Scripts/Berries.cs

@@ -25,8 +25,12 @@ public partial class Berries : Node2D {
 
             int BerryChance = new Random().Next(1, 101);
 
-            if (BerryChance <= 80) {
+            if (BerryChance <= 60) {
                 BerrySprite.Texture = (Texture2D)GD.Load("res://Textures/Berries/Berry.png");
+            } else if (BerryChance <= 80) {
+                BerrySprite.Texture = (Texture2D)GD.Load("res://Textures/Berries/PoisonBerry.png");
+            } else if (BerryChance <= 90) {
+                BerrySprite.Texture = (Texture2D)GD.Load("res://Textures/Berries/SlowBerry.png");
             } else {
                 BerrySprite.Texture = (Texture2D)GD.Load("res://Textures/Berries/UltraBerry.png");
             }

Scripts/BerryLogic.cs

@@ -12,9 +12,15 @@ public partial class BerryLogic : Node2D {
             BerryType = "normal";
         } else if (Sprite == GD.Load(BerryTexturesFolder + "UltraBerry.png")) {
             BerryType = "ultra";
+        } else if (Sprite == GD.Load(BerryTexturesFolder + "PoisonBerry.png")) {
+            BerryType = "poison";
+        } else if (Sprite == GD.Load(BerryTexturesFolder + "SlowBerry.png")) {
+            BerryType = "slow";
         }
 
-        int ScoreAdder = (BerryType == "normal") ? 1 : 5;
+        int ScoreAdder = (BerryType == "normal") ? 1 :
+            (BerryType == "poison" || BerryType == "slow") ? 0 : 5;
+
         Globals.Score += ScoreAdder;
         if (Globals.Score > Globals.HighScore) {
             Globals.HighScore += ScoreAdder;