feat(frontend): add API client, layout, and routing

- Create Axios-based API client with sources, jobs, and dashboard endpoints
- Add responsive Layout component with navigation sidebar
- Set up React Router with Dashboard, Backups, and Settings routes
- Configure TanStack Query provider with default options
- Use lucide-react for navigation icons

frontend/node_modules/fast-glob/out/providers/stream.d.ts

@@ -0,0 +1,11 @@
+/// <reference types="node" />
+import { Readable } from 'stream';
+import { Task } from '../managers/tasks';
+import ReaderStream from '../readers/stream';
+import { ReaderOptions } from '../types';
+import Provider from './provider';
+export default class ProviderStream extends Provider<Readable> {
+    protected _reader: ReaderStream;
+    read(task: Task): Readable;
+    api(root: string, task: Task, options: ReaderOptions): Readable;
+}