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/utils/history.ts

@@ -0,0 +1,40 @@
+export enum History {
+  None = 0,
+  Push = 1,
+  Replace = 2,
+}
+
+export const initialUrlParams = new URLSearchParams(window.location.search);
+export const getCurrentUrlParams = () => {
+  return new URLSearchParams(window.location.search);
+};
+
+export function updateQueryString(
+  key: string,
+  value?: string | string[],
+  action?: History,
+  url?: string,
+) {
+  const historyAction = action ?? History.Replace;
+  const ret = new URL(url ?? window.location.href);
+
+  if (value === undefined || value === null || value === "") {
+    // If the value is null, undefined or empty => delete it
+    ret.searchParams.delete(key);
+  } else if (Array.isArray(value)) {
+    ret.searchParams.delete(key);
+    for (const v of value) {
+      ret.searchParams.append(key, v);
+    }
+  } else {
+    ret.searchParams.set(key, value);
+  }
+
+  if (historyAction === History.Push) {
+    window.history.pushState(null, "", ret.toString());
+  } else if (historyAction === History.Replace) {
+    window.history.replaceState(null, "", ret.toString());
+  }
+
+  return ret;
+}