Add mappings for checkClick, mouseCanvasHoverX/Y

- Add mappings to use checkClick, mouseCanvasHover X and Y from
runescape-client
- Add methods to set them to runelite-api

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

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

@@ -368,6 +368,23 @@ public interface Client extends GameEngine
 	 */
 	int getMouseCurrentButton();
 
+	/**
+	 * Schedules checking of current region tile for next frame, so ${@link Client#getSelectedSceneTile()} ()} will
+	 * return actual value.
+	 *
+	 * @param checkClick when true next frame selected region tile will be updated
+	 */
+	void setCheckClick(boolean checkClick);
+
+	/**
+	 * Sets current mouse hover position. This value is automatically updated only when right-clicking in game.
+	 * Setting this value together with ${@link Client#setCheckClick(boolean)} will update ${@link Client#getSelectedSceneTile()} ()}
+	 * for next frame.
+	 *
+	 * @param position current mouse hover position
+	 */
+	void setMouseCanvasHoverPosition(Point position);
+
 	/**
 	 * Gets the currently selected tile (ie. last right clicked tile).
 	 *