outsource parser in seperate mod

src/main.rs

@@ -1,10 +1,10 @@
-mod mdstat_parser;
+mod parser;
 
 #[macro_use]
 extern crate rocket;
 
 use rocket::serde::json::Json;
-use crate::mdstat_parser::{MdRaidSystem, parse_mdstat};
+use crate::parser::mdstat_parser::{MdRaidSystem, parse_mdstat};
 
 #[get("/raiddevices")]
 fn get_raid_devices() -> Json<MdRaidSystem> {