Add import for Screen in MinecraftMixin.java so code compiles

Author: Shadowbee27

fabric/src/main/java/org/modsauce/otyacraftenginerenewed/fabric/mixin/client/MinecraftMixin.java

@@ -1,6 +1,7 @@
 package org.modsauce.otyacraftenginerenewed.fabric.mixin.client;
 
 import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.screens.Screen;
 import net.minecraft.client.multiplayer.ClientLevel;
 import net.minecraft.client.player.LocalPlayer;
 import net.minecraft.world.InteractionHand;