add save function to root_config

src/types/game.rs

@@ -3,12 +3,12 @@ use std::{
     path::{Path, PathBuf},
 };
 
-use serde::Deserialize;
+use serde::{Deserialize, Serialize};
 
 use crate::{types::link::Link, utils::walk_all_files};
 
 /// Available game
-#[derive(Debug, Clone, Deserialize)]
+#[derive(Debug, Clone, Deserialize, Serialize)]
 pub struct Game {
     path: PathBuf,
 }