Add tile indicators plugin

Add tile indicators plugin, that will currently highlight the tile
player is walking to. It is disabled by default, and have configurable
highlighting color.

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

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

@@ -167,4 +167,6 @@ public interface Client
 	boolean isIgnored(String name);
 
 	boolean isClanMember(String name);
+
+	Point getSceneDestinationLocation();
 }