test: add e2e test to test disabled skipLibCheck

Author: alan-agius4

tests/legacy-cli/e2e/tests/build/skip-lib-check.ts

@@ -0,0 +1,11 @@
+import { ng } from '../../utils/process';
+import { createProject, updateTsConfig } from '../../utils/project';
+
+
+export default async function() {
+  await createProject('strict-workspace-test-project', '--strict');
+  await updateTsConfig(json => {
+    json['compilerOptions']['skipLibCheck'] = false;
+  });
+  await ng('build');
+}