Beginning of frontend + recipe editing

(it's a mess)

backend/src/main.rs

@@ -48,6 +48,7 @@ async fn main() -> std::io::Result<()> {
                 .service(services::sign_in_post)
                 .service(services::sign_out)
                 .service(services::view_recipe)
+                .service(services::edit_recipe)
                 .service(fs::Files::new("/static", "static"))
                 .default_service(web::to(services::not_found))
         });