Adds comments and simplifies some of the code

Adds a PortalOption enum to simplify portal options
Adds a BungeeHelper class to collect the bungee-related code

src/main/java/net/knarcraft/stargate/event/StargateCloseEvent.java

@@ -10,9 +10,8 @@ import org.jetbrains.annotations.NotNull;
 @SuppressWarnings("unused")
 public class StargateCloseEvent extends StargateEvent {
 
-    private boolean force;
-
     private static final HandlerList handlers = new HandlerList();
+    private boolean force;
 
     /**
      * Instantiates a new stargate closing event
@@ -26,6 +25,15 @@ public class StargateCloseEvent extends StargateEvent {
         this.force = force;
     }
 
+    /**
+     * Gets a handler-list containing all event handlers
+     *
+     * @return <p>A handler-list with all event handlers</p>
+     */
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+
     /**
      * Gets whether to force the stargate to close
      *
@@ -44,15 +52,6 @@ public class StargateCloseEvent extends StargateEvent {
         this.force = force;
     }
 
-    /**
-     * Gets a handler-list containing all event handlers
-     *
-     * @return <p>A handler-list with all event handlers</p>
-     */
-    public static HandlerList getHandlerList() {
-        return handlers;
-    }
-
     @NotNull
     @Override
     public HandlerList getHandlers() {