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/plants/scripts/plant_mutation/ermit_mutation.gd

@@ -1,26 +0,0 @@
-extends PlantMutation
-class_name ErmitMutation
-
-func get_icon() -> Texture:
-	return preload("res://common/icons/seedling-off.svg")
-
-func get_base_rarity() -> int:
-	return 0
-
-func get_mutation_name() -> String:
-	return tr("ERMIT")
-
-func get_mutation_description() -> String:
-	return tr("ERMIT_EFFECT_TEXT_LEVEL_%d") % get_score_multiplier()
-
-func get_score_multiplier():
-	return level + 1
-
-func mutate_score(_plant_state : Plant.State, plant : Plant, score) -> int:
-	if plant.influence_zone == null:
-		return score 
-	for area in plant.influence_zone.get_overlapping_areas():
-		if area is Plant and area != plant:
-			return 0
-
-	return score * get_score_multiplier()