All-Stars Pose at Level End

This adds a new and optional animation for Characters called `PoseDoor`. When a character uses this animation, they stop at the entrance of the castle door to strike a pose like in All-Stars.

Scripts/Classes/States/Player/LevelExit.gd

@@ -7,6 +7,7 @@ func enter(_msg := {}) -> void:
 	player.get_node("CameraCenterJoint/RightWall").set_collision_layer_value(1, false)
 
 func physics_update(delta: float) -> void:
+	if player.is_posing: return
 	player.input_direction = 1
 	player.can_run = false
 	player.normal_state.handle_movement(delta)