refacto: rename html and rs templates dirs to old_*

crates/app/src/main.rs

@@ -1,15 +1,17 @@
-use ::app::get_router;
+use std::path::Path;
+use std::{env, io};
+
 use axum::body::Body;
 use axum::http::Request;
 use listenfd::ListenFd;
 use notify::Watcher;
-use std::path::Path;
-use std::{env, io};
 use thiserror::Error;
 use tokio::net::TcpListener;
 use tower_livereload::predicate::Predicate;
 use tower_livereload::LiveReloadLayer;
 
+use ::app::get_router;
+
 #[derive(Error, Debug)]
 pub enum AppError {
     #[error("Unable to bind to TCP listener")]