feat: show search icon in header instead of input

+ fix: persistent updating text on update playlist modal
+ move router routes to a separate file
    + lazy import route components
+ remove loading: lazy from songcard
+ remove unused imports on navigation component

src/composables/fetch/searchMusic.ts

@@ -1,5 +1,4 @@
 import { paths } from "@/config";
-import state from "../state";
 import axios from "axios";
 import useAxios from "./useAxios";
 
@@ -81,5 +80,4 @@ export {
   loadMoreArtists,
 };
 
-// TODO:
-// Rewrite this module using `useAxios` hook
+// TODO: Rewrite this module using `useAxios` hook