Remove VITE_SERVER_ENDPOINT dependency (#428)

* Move backend api to its own instance

* Remove external fetch hook

* Added endpoint for album

* Added endpoint for admin page

* Make request directly to immich-server

* Refactor unsued code

web/src/routes/albums/[albumId]/photos/[assetId].svelte

@@ -1,12 +1,10 @@
 <script context="module" lang="ts">
 	export const prerender = false;
-
-	import { api } from '@api';
 	import type { Load } from '@sveltejs/kit';
 
 	export const load: Load = async ({ params }) => {
 		try {
-			await api.userApi.getMyUserInfo();
+			await fetch('/data/user/get-my-user-info');
 		} catch (e) {
 			return {
 				status: 302,