[tests] Add tests for examples (#9403)

These tests will run if one of the conditions is met:

- any change to `./examples`
- any changes to `./packages/frameworks`

The test ensures that examples can build and deploy without errors.

In a future PR, we could improve these tests to make requests to the
test deployment (like we do for probes).

examples/__tests__/test-utils.ts

@@ -0,0 +1,7 @@
+import { basename, join } from 'path';
+import { testDeployment } from '../../test/lib/deployment/test-deployment.js';
+
+export async function deployExample(filename: string) {
+  const example = basename(filename).replace(/\.test\.ts$/, '');
+  await testDeployment(join(filename, '..', '..', '..', example));
+}