Added job component and queue system

- Introduced a new JobComponent and JobQueue to manage jobs in the game.
- Created two new jobs: DigJob and InfectJob with their respective scripts.
- Updated CrystalGlowComponent, FreeCameraComponent, MushroomGlowComponent, WaterEffectComponent to improve logging messages.
- Adjusted camera movement limits in FreeCameraGameCameraComponent for better control.
- Added FiniteStateMachine class for managing states of entities.
- Implemented GlowingIdle state as an example of using the state machine.
- Included a utility function to fetch file paths by extension from a directory.

components/scripts/free_camera_game_camera_component.gd

@@ -64,18 +64,18 @@ func _physics_process(delta : float) -> void:
 	# If this movement would take us  out of clamp we don't want to do it:
 	var position_change : Vector2 = camera_movement * get_zoom()
 
-	if (position.x + position_change.x) <= limit_left or\
-		(position.x + position_change.x) >= limit_right:
+	if (position.x + position_change.x) < limit_left or\
+		(position.x + position_change.x) > limit_right:
 		camera_movement.x = 0
 
-	if (position.y + position_change.y) <= limit_top or\
-		(position.y + position_change.y) >= limit_bottom:
+	if (position.y + position_change.y) < limit_top or\
+		(position.y + position_change.y) > limit_bottom:
 		camera_movement.y = 0
 	
 	if camera_movement.y != 0 or camera_movement.x != 0:
 		# Update position of the camera.
 		position += camera_movement * get_zoom()
-		
+
 	# Set camera movement to zero, update old mouse position.
 	camera_movement = Vector2(0,0)
 	_prev_mouse_pos = get_local_mouse_position()