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

entities/interactables/ladder/scripts/ladder.gd

@@ -0,0 +1,20 @@
+extends Interactable
+class_name Ladder
+
+func _ready():
+    appear()
+    # hide()
+    GameInfo.game_data.current_region_data.updated.connect(
+        func (region_data : RegionData):
+            if region_data.get_state() == RegionData.State.SUCCEEDED or region_data.get_state() == RegionData.State.FAILED:
+                %IconAnimationPlayer.play("Pulse")
+    )
+
+func appear():
+    show()
+    %LadderAnimationPlayer.play("appear")
+
+func interact(p : Player):
+    p.region.save()
+    SceneManager.change_scene("COCKPIT")
+    return true