Implement save and loading games (#8)

game/ui/commons/load/load_game.gd

@@ -0,0 +1,26 @@
+extends Control
+
+signal back_button_pressed
+
+export(PackedScene) var slot_ui_scene
+
+func _ready():
+	refresh_savegames()
+
+func _on_slot_pressed(slot_id: int) -> void:
+	escoria.save_manager.load_game(slot_id)
+
+func _on_back_pressed():
+	emit_signal("back_button_pressed")
+
+func refresh_savegames():
+	for slot in $ScrollContainer/slots.get_children():
+		$ScrollContainer/slots.remove_child(slot)
+	
+	var saves_list = escoria.save_manager.get_saves_list()
+	for i in saves_list.size():
+		var save_data = saves_list[i+1]
+		var new_slot = slot_ui_scene.instance()
+		$ScrollContainer/slots.add_child(new_slot)
+		new_slot.set_slot_name_date(save_data["name"], save_data["date"])
+		new_slot.connect("pressed", self, "_on_slot_pressed", [i+1])