Add feature #208 - Bungee texture packs.

api/src/main/java/net/md_5/bungee/api/config/ListenerInfo.java

@@ -42,4 +42,9 @@ public class ListenerInfo
      * transferred depending on the host they connect to.
      */
     private final Map<String, String> forcedHosts;
+    /**
+     * Get the texture pack used for servers connected to this proxy. May be
+     * null.
+     */
+    private final TexturePackInfo texturePack;
 }

api/src/main/java/net/md_5/bungee/api/config/TexturePackInfo.java

@@ -0,0 +1,17 @@
+package net.md_5.bungee.api.config;
+
+import lombok.Data;
+
+@Data
+public class TexturePackInfo
+{
+
+    /**
+     * The URL of the texture pack.
+     */
+    private final String url;
+    /**
+     * The square dimension of this texture pack.
+     */
+    private final int size;
+}