Use typescript api for user pictures and allow imports across js files

* Add imports paths for js files in node
* Add a ts version of fetchPaginated
* Update documentation

core/static/webpack/utils/api.ts

@@ -0,0 +1,46 @@
+import type { Options, RequestResult } from "@hey-api/client-fetch";
+
+interface PaginatedResponse<T> {
+  count: number;
+  next: string | null;
+  previous: string | null;
+  results: T[];
+}
+
+interface PaginatedRequest {
+  query?: {
+    page?: number;
+    // biome-ignore lint/style/useNamingConvention: api is in snake_case
+    page_size?: number;
+  };
+}
+
+type PaginatedEndpoint<T> = <ThrowOnError extends boolean = false>(
+  options?: Options<PaginatedRequest, ThrowOnError>,
+) => RequestResult<PaginatedResponse<T>, unknown, ThrowOnError>;
+
+export const paginated = async <T>(
+  endpoint: PaginatedEndpoint<T>,
+  options?: PaginatedRequest,
+) => {
+  const maxPerPage = 199;
+  options.query.page_size = maxPerPage;
+  options.query.page = 1;
+
+  const firstPage = (await endpoint(options)).data;
+  const results = firstPage.results;
+
+  const nbElements = firstPage.count;
+  const nbPages = Math.ceil(nbElements / maxPerPage);
+
+  if (nbPages > 1) {
+    const promises: Promise<T[]>[] = [];
+    for (let i = 2; i <= nbPages; i++) {
+      const nextPage = structuredClone(options);
+      nextPage.query.page = i;
+      promises.push(endpoint(nextPage).then((res) => res.data.results));
+    }
+    results.push(...(await Promise.all(promises)).flat());
+  }
+  return results;
+};