Ajout des mutation Nettoyage, Ermite, Tropicale, Rhizome et Spontanée

entities/plants/scripts/plant_mutation/cleaning_mutation.gd

@@ -2,7 +2,7 @@ extends PlantMutation
 class_name CleaningMutation
 
 func get_icon() -> Texture:
-    return preload("res://common/icons/alert-triangle.svg")
+    return preload("res://common/icons/bug.svg")
 
 func get_mutation_id() -> String:
     return "CLEANING"
@@ -22,4 +22,4 @@ func _start_dead_effect(plant: Plant):
     ))
 
 func get_purification_radius() -> int:
-    return level + 1 # one more than purification
+    return level * 2