Add first pass of basic mock server for alerting usage

public/app/features/alerting/unified/mock-server.ts

@@ -0,0 +1,43 @@
+import 'whatwg-fetch';
+import { HttpResponse, http } from 'msw';
+import { setupServer } from 'msw/node';
+
+import { AccessControlAction } from 'app/types';
+
+const alertingServer = setupServer(
+  // TODO: Scaffold out test behaviour/configuration for search endpoint
+  http.get('/api/search', () => {
+    return HttpResponse.json([]);
+  }),
+  // TODO: Scaffold out test behaviour/configuration for user endpoint
+  http.get('/api/user', () => {
+    return HttpResponse.json({});
+  }),
+  // TODO: Scaffold out test behaviour/configuration for alert manager endpoint
+  http.get('/api/v1/ngalert', () => {
+    return HttpResponse.json({ alertmanagersChoice: 'all', numExternalAlertmanagers: 1 });
+  }),
+
+  http.get('/api/folders/:folderUid', () => {
+    return HttpResponse.json({
+      accessControl: { [AccessControlAction.AlertingRuleUpdate]: true },
+    });
+  }),
+  http.get('/api/prometheus/grafana/api/v1/rules', () => {
+    return HttpResponse.json([]);
+  }),
+  http.get('/api/ruler/grafana/api/v1/rules', () => {
+    return HttpResponse.json([]);
+  }),
+  http.post('/api/ruler/grafana/api/v1/rules/:namespaceUID/', async ({ request }) => {
+    console.log('updaint');
+    const body = await request.json();
+    console.log(JSON.stringify(body, null, 2));
+    return HttpResponse.json({
+      message: 'rule group updated successfully',
+      updated: ['foo', 'bar', 'baz'],
+    });
+  })
+);
+
+export default alertingServer;