refactor(dev-infra): create ng-dev executable locally in the repo (#39089)

Rather than running ng-dev via ts-node, going forward ng-dev is generated and run
locally via node.  Additionally, the generated file is tested on each commit to
ensure that the local generated version stays up to date.

PR Close #39089

dev-infra/utils/github.ts

@@ -8,7 +8,7 @@
 
 import {params, types} from 'typed-graphqlify';
 
-import {GitClient} from './git';
+import {GitClient} from './git/index';
 
 /** Get a PR from github  */
 export async function getPr<PrSchema>(prSchema: PrSchema, prNumber: number, git: GitClient) {