save groups meta

UI/Components/GroupMenu.gd

@@ -56,6 +56,7 @@ func add_new_install() -> void:
 			install_item.setup_from_metadata(im)
 			install_item.edit_item_button_pressed.connect(edit_install.bind(install_item))
 			group_metadata.installs.append(im)
+			group_metadata.save_request.emit()
 	, CONNECT_ONE_SHOT)
 
 	install_edit_dialog.show()
@@ -144,6 +145,7 @@ func setup_rename() -> void:
 		func(new_text: String):
 			header_text_label.text = new_text
 			group_metadata.name = new_text
+			group_metadata.save_request.emit()
 
 			reenable.call()
 	)