[Bleeding] Added getting the hostname a player used to log in. Addresses BUKKIT-984

By: SpaceManiac <tad.hardesty@platymuus.com>

paper-api/src/main/java/org/bukkit/event/player/PlayerLoginEvent.java

@@ -10,11 +10,17 @@ public class PlayerLoginEvent extends PlayerEvent {
     private static final HandlerList handlers = new HandlerList();
     private Result result = Result.ALLOWED;
     private String message = "";
+    private String hostname = "";
 
     public PlayerLoginEvent(final Player player) {
         super(player);
     }
 
+    public PlayerLoginEvent(final Player player, final String hostname) {
+        this(player);
+        this.hostname = hostname;
+    }
+
     public PlayerLoginEvent(final Player player, final Result result, final String message) {
         this(player);
         this.result = result;
@@ -57,6 +63,15 @@ public class PlayerLoginEvent extends PlayerEvent {
         this.message = message;
     }
 
+    /**
+     * Gets the hostname that the player used to connect to the server, or blank if unknown
+     *
+     * @return The hostname
+     */
+    public String getHostname() {
+        return hostname;
+    }
+
     /**
      * Allows the player to log in
      */