Add server connected event

api/src/main/java/net/md_5/bungee/api/event/ServerConnectedEvent.java

@@ -0,0 +1,30 @@
+package net.md_5.bungee.api.event;
+
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
+import net.md_5.bungee.api.connection.ProxiedPlayer;
+import net.md_5.bungee.api.connection.Server;
+import net.md_5.bungee.api.plugin.Event;
+
+/**
+ * Not to be confused with {@link ServerConnectEvent}, this event is called once
+ * a connection to a server is fully operational, and is about to hand over
+ * control of the session to the player. It is useful if you wish to send
+ * information to the server before the player logs in.
+ */
+@Data
+@ToString(callSuper = true)
+@EqualsAndHashCode(callSuper = true)
+public class ServerConnectedEvent extends Event
+{
+
+    /**
+     * Player whom the server is for.
+     */
+    private final ProxiedPlayer player;
+    /**
+     * The server itself.
+     */
+    private final Server server;
+}