api: add methods to get clan owner and chat name

Co-authored-by: trimbe <benno.tremback@gmail.com>

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

@@ -1055,6 +1055,20 @@ public interface Client extends GameEngine
 	 */
 	ClanMember[] getClanMembers();
 
+	/**
+	 * Gets the clan owner of the currently joined clan chat
+	 *
+	 * @return
+	 */
+	String getClanOwner();
+
+	/**
+	 * Gets the clan chat name of the currently joined clan chat
+	 *
+	 * @return
+	 */
+	String getClanChatName();
+
 	/**
 	 * Gets an array of players in the friends list.
 	 *