changement du scene manager, amélioration du cockpit et autres

* refonte du scene manager
* refonte du audio manager
* premier rework des plantes
* nettoyage des dossiers/fichiers
* renommage de planète en region
* fix des run

gui/game/tutorial/in_game_indicator/scripts/in_game_base_indicator.gd

@@ -6,13 +6,13 @@ class_name InGameBaseIndicator
 # Called when the node enters the scene tree for the first time.
 func _ready():
 	setup(tr("GARDEN"))
-	follow_game_position(Planet.CHUNK_SIZE / 2. * Vector2.ONE)
+	follow_game_position(Region.CHUNK_SIZE / 2. * Vector2.ONE)
 
 func _process(_delta):
 	visible = player and (
 		player.global_position.x < 0 
-		or player.global_position.x > Planet.CHUNK_SIZE
+		or player.global_position.x > Region.CHUNK_SIZE
 		or player.global_position.y < 0
-		or player.global_position.y > Planet.CHUNK_SIZE
+		or player.global_position.y > Region.CHUNK_SIZE
 	)
 	update()