Add clan ranks to clan chat

- Extend API to include support for getting clan members and
informations about them
- Add API for manipulation with modIcons
- Display clan ranks in clan chat (add to ClanChat plugin)
- Add new hook for clan members changed

Signed-off-by: Tomas Slusny <slusnucky@gmail.com>

runelite-api/src/main/java/net/runelite/api/MessageNode.java

@@ -28,8 +28,14 @@ public interface MessageNode
 {
 	ChatMessageType getType();
 
+	String getName();
+
+	void setName(String name);
+
 	String getSender();
 
+	void setSender(String sender);
+
 	String getValue();
 
 	void setValue(String value);