Added player join event

By: Raphfrk <raphfrk@gmail.com>

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

@@ -0,0 +1,30 @@
+package org.bukkit.event.player;
+
+import org.bukkit.entity.Player;
+
+public class PlayerJoinEvent extends PlayerEvent {
+    private String joinMessage;
+
+    public PlayerJoinEvent(Type eventType, Player playerJoined, String joinMessage) {
+        super(eventType, playerJoined);
+        this.joinMessage = joinMessage;
+    }
+
+    /**
+     * Gets the join message to send to all online players
+     *
+     * @return string join message
+     */
+    public String getJoinMessage() {
+        return joinMessage;
+    }
+
+    /**
+     * Sets the join message to send to all online players
+     *
+     * @param joinMessage join message
+     */
+    public void setJoinMessage(String joinMessage) {
+        this.joinMessage = joinMessage;
+    }
+}

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

@@ -15,7 +15,7 @@ public class PlayerListener implements Listener {
      *
      * @param event Relevant event details
      */
-    public void onPlayerJoin(PlayerEvent event) {
+    public void onPlayerJoin(PlayerJoinEvent event) {
     }
 
     /**

paper-api/src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java

@@ -168,7 +168,7 @@ public final class JavaPluginLoader implements PluginLoader {
         case PLAYER_JOIN:
             return new EventExecutor() {
                 public void execute( Listener listener, Event event ) {
-                    ((PlayerListener)listener).onPlayerJoin( (PlayerEvent)event );
+                    ((PlayerListener)listener).onPlayerJoin( (PlayerJoinEvent)event );
                 }
             };
         case PLAYER_QUIT: