feat(web)!: SPA (#5069)

* feat(web): SPA

* chore: remove unnecessary prune

* feat(web): merge with immich-server

* Correct method name

* fix: bugs, docs, workflows, etc.

* chore: keep dockerignore for dev

* chore: remove license

* fix: expose 2283

---------

Co-authored-by: Alex Tran <alex.tran1502@gmail.com>

web/src/routes/+page.ts

@@ -0,0 +1,28 @@
+import { AppRoute } from '$lib/constants';
+import { redirect } from '@sveltejs/kit';
+import { api } from '../api';
+import { isLoggedIn } from '../lib/utils/auth';
+import type { PageLoad } from './$types';
+
+export const ssr = false;
+export const csr = true;
+
+export const load = (async () => {
+  const authenticated = await isLoggedIn();
+  if (authenticated) {
+    throw redirect(302, AppRoute.PHOTOS);
+  }
+
+  const { data } = await api.serverInfoApi.getServerConfig();
+  if (data.isInitialized) {
+    // Redirect to login page if there exists an admin account (i.e. server is initialized)
+    throw redirect(302, AppRoute.AUTH_LOGIN);
+  }
+
+  return {
+    meta: {
+      title: 'Welcome 🎉',
+      description: 'Immich Web Interface',
+    },
+  };
+}) satisfies PageLoad;