started research skills

scripts/game_resource.gd

@@ -8,6 +8,7 @@ signal gained_resource(res: GameResource)
 @export var name: String
 @export var spawn_patterns: Array[SpawnPattern]
 @export var storage_max: int
+@export var skills_needed: Array[Skills.ABILITIES] = []
 
 func _to_string() -> String:
 	return name
@@ -17,3 +18,6 @@ func get_spawn_locations() -> Array[Vector2i]:
 	for spawn in spawn_patterns:
 		spawns.append_array(spawn.get_spawn_locations())
 	return spawns
+
+func can_harvest(skills: Skills) -> bool:
+	return skills.has_skills(skills_needed)