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

entities/plants/scripts/plant_data.gd

@@ -70,6 +70,10 @@ func get_growing_time() -> int:
     return max(1,growing_time)
 
 func get_score(state: State = get_state()) -> int:
+    for m in mutations:
+        if m.nullify_score(self):
+            return 0
+    
     var score = get_plant_info().get_base_score() if state == State.MATURE else 0
 
     var mult := 1.