ci: use dev-infra cli from local sources (#36326)

Use dev-infra cli from local sources rather than loading
from @angular/dev-infra-private builds.

PR Close #36326

dev-infra/commit-message/cli.ts

@@ -11,8 +11,9 @@ import {validateFile} from './validate-file';
 /** Build the parser for the commit-message commands. */
 export function buildCommitMessageParser(localYargs: yargs.Argv) {
   return localYargs.help().strict().command(
-      'pre-commit-validate', 'Validate the most recent commit message', {},
-      () => { validateFile('.git/COMMIT_EDITMSG'); });
+      'pre-commit-validate', 'Validate the most recent commit message', {}, () => {
+        validateFile('.git/COMMIT_EDITMSG');
+      });
 }
 
 if (require.main == module) {

dev-infra/ng-dev

@@ -0,0 +1,11 @@
+#!/usr/bin/env ts-node
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+// Loads the ng-dev cli, automatically executing it.
+require('./cli.ts');