Add ResizeObserver polyfill by juggle

Potential fix for older browsers

src/polyfill.manual.ts

@@ -0,0 +1,11 @@
+/*
+ * Copyright (C) Contributors to the Suwayomi project
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+import { ResizeObserver as JuggleResizeObserver } from '@juggle/resize-observer';
+
+window.ResizeObserver ??= JuggleResizeObserver;