feat: add fetchURL function

Author: EscapedGibbon

src/load/fetchURL.ts

@@ -0,0 +1,13 @@
+import { decode } from './decode.js';
+
+/**
+ * Fetches image URL and decodes it.
+ * @param dataUrl - Image URL.
+ * @returns decoded image data.
+ */
+export async function fetchURL(dataUrl: string) {
+  const response = await fetch(dataUrl);
+  const arrayBuffer = await response.arrayBuffer();
+  const image = decode(new Uint8Array(arrayBuffer));
+  return image;
+}