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/StargateAccessEvent.java

@@ -11,46 +11,49 @@ import org.jetbrains.annotations.NotNull;
 @SuppressWarnings("unused")
 public class StargateAccessEvent extends StargatePlayerEvent {
 
-	private boolean deny;
-	
-	private static final HandlerList handlers = new HandlerList();
+    private static final HandlerList handlers = new HandlerList();
+    private boolean deny;
 
     /**
      * Instantiates a new stargate access event
+     *
      * @param player <p>The player involved in the vent</p>
      * @param portal <p>The portal involved in the event</p>
-     * @param deny <p>Whether the event should be denied</p>
+     * @param deny   <p>Whether the event should be denied</p>
      */
-	public StargateAccessEvent(Player player, Portal portal, boolean deny) {
-		super("StargateAccessEvent", portal, player);
+    public StargateAccessEvent(Player player, Portal portal, boolean deny) {
+        super("StargateAccessEvent", portal, player);
 
-		this.deny = deny;
-	}
-
-    /**
-     * Gets whether the player should be denied access
-     * @return <p>Whether the player should be denied access</p>
-     */
-	public boolean getDeny() {
-		return this.deny;
-	}
-
-    /**
-     * Sets whether to deny the player
-     * @param deny <p>Whether to deny the player</p>
-     */
-	public void setDeny(boolean deny) {
-		this.deny = deny;
-	}
+        this.deny = deny;
+    }
 
     /**
      * 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 the player should be denied access
+     *
+     * @return <p>Whether the player should be denied access</p>
+     */
+    public boolean getDeny() {
+        return this.deny;
+    }
+
+    /**
+     * Sets whether to deny the player
+     *
+     * @param deny <p>Whether to deny the player</p>
+     */
+    public void setDeny(boolean deny) {
+        this.deny = deny;
+    }
+
     @Override
     @NotNull
     public HandlerList getHandlers() {