Adds a new The End- inspired gate for more default diversity

src/main/java/net/knarcraft/stargate/portal/GateHandler.java

@@ -400,6 +400,7 @@ public class GateHandler {
     private static void populateDefaults(String gateFolder) {
         loadGateFromJar("nethergate.gate", gateFolder);
         loadGateFromJar("watergate.gate", gateFolder);
+        loadGateFromJar("endgate.gate", gateFolder);
     }
 
     /**

src/main/resources/gates/endgate.gate

@@ -0,0 +1,12 @@
+portal-open=END_GATEWAY
+portal-closed=AIR
+button=BIRCH_BUTTON
+toowner=false
+X=END_STONE_BRICKS
+-=END_STONE_BRICKS
+
+ XX
+X..X
+-..-
+X*.X
+ XX