Simplemouse fixes (#669)

* fix: Simplemouse bounding box size fix
* fix: Bug when exiting game with simplemouse with disconnecting non-connected gamepad
* fix: issue-339. Simplemouse gives an error in the debug when you move on/off ESCItems
* fix: tracks mouse position to allow for mouse tracking as well as on-demand tooltip updates on immediate target change, i.e. rendering doesn't lag a frame behind.
* chore: decouple further by using a signal
* fix: Correct action getting randomly lost with simplemouse
* fix: deleted objects aren't always equated to null.
* fix: clear the tooltip when an action is finished.
* fix: clears tooltip only on successful event completion; debug code cleanup.
* Broken room 5
* fix: Item collisions correctly determined when game resolution = screen resolution
* Update addons/escoria-core/game/core-scripts/esc_item.gd
Co-authored-by: Duncan Brown <duncan@prometheussoftware.ca>
* Update addons/escoria-ui-simplemouse/game.gd
Co-authored-by: Duncan Brown <duncan@prometheussoftware.ca>
* fix: Reverted default UI to 9 verbs
Co-authored-by: Balloonpopper <balloonpopper@git.com>
Co-authored-by: Duncan Brown <duncan@prometheussoftware.ca>

game/characters/mark/mark.tscn

@@ -507,7 +507,6 @@ tooltip_name = "Me"
 default_action = "look"
 combine_when_selected_action_is_in = [  ]
 dialog_color = Color( 1, 1, 1, 1 )
-selectable = true
 animations = ExtResource( 8 )
 
 [node name="sprite" type="AnimatedSprite" parent="."]