Go for a more generic js bundling architecture

* Don't tie the output name to webpack itself
* Don't call js bundling webpack in python code
* Make the doc more generic about js bundling

core/static/bundled/sentry-popup-index.ts

@@ -0,0 +1,24 @@
+import { exportToHtml } from "#core:utils/globals";
+// biome-ignore lint/style/noNamespaceImport: this is the recommended way from the documentation
+import * as Sentry from "@sentry/browser";
+
+interface LoggedUser {
+  name: string;
+  email: string;
+}
+
+interface SentryOptions {
+  dsn: string;
+  eventId: string;
+  user?: LoggedUser;
+}
+
+exportToHtml("loadSentryPopup", (options: SentryOptions) => {
+  Sentry.init({
+    dsn: options.dsn,
+  });
+  Sentry.showReportDialog({
+    eventId: options.eventId,
+    ...(options.user ?? {}),
+  });
+});