feat: add widget preview pages (#9)

* feat: add widget definition system

* fix: wrong typecheck command in turbo generator

* chore: fix formatting

* feat: add widget preview page

* chore: fix formatting and type errors

* chore: fix from widget edit modal and remove some never casts

* chore: address pull request feedback

apps/nextjs/src/components/layout/header/burger.tsx

@@ -0,0 +1,18 @@
+"use client";
+
+import { useCallback } from "react";
+import { atom, useAtom } from "jotai";
+
+import { Burger } from "@homarr/ui";
+
+export const navigationCollapsedAtom = atom(true);
+
+export const ClientBurger = () => {
+  const [collapsed, setCollapsed] = useAtom(navigationCollapsedAtom);
+
+  const toggle = useCallback(() => setCollapsed((c) => !c), [setCollapsed]);
+
+  return (
+    <Burger opened={!collapsed} onClick={toggle} hiddenFrom="sm" size="sm" />
+  );
+};