Ajout des mutations Sauveteuse, Adaptative et résistante, ajout des crédits du jeu et d'un splash screen (+ un peu de debug)

entities/plants/scripts/plant_mutation/savior_mutation.gd

@@ -0,0 +1,25 @@
+extends PlantMutation
+class_name SaviorMutation
+
+func get_icon() -> Texture:
+    return preload("res://common/icons/lifebuoy.svg")
+
+func get_mutation_id() -> String:
+    return "SAVIOR"
+
+func get_base_rarity() -> int:
+    return 0
+
+func get_mutation_description() -> String:
+    return tr("SAVIOR_EFFECT_TEXT").format({
+        "score_icon": Text.bbcode_icon(Plant.SCORE_ICON),
+        "score_multiplier": get_score_multiplier() + 1,
+    })
+
+func mutate_score_multiplier(plant_data: PlantData, multiplier: float) -> float:
+    if plant_data.region_data and plant_data.region_data.charges == 0:
+        return multiplier + get_score_multiplier()
+    return multiplier
+
+func get_score_multiplier()->float:
+    return 0.5 * level