feat(dev-infra): register ts-node when reading configuration (#37196)

`ts-node` is now an optional peer dependency of the shared dev-infra
package. Whenever a `ng-dev` command runs, and a TypeScript-based
configuration file exists, `ts-node` is set up if available.

That allows consumers of the package (as the components repo) to more
conveniently use a TypeScript-based configuration for dev-infra.

Currently, commands would need to be proxied through `ts-node`
which rather complicates the setup:

```
NG_DEV_COMMAND="ts-node ./node_modules/@angular/dev-infra-private/cli.js"
```

I'm thinking that it should be best-practice to use TypeScript for
writing the configuration files. Given that the tool is used primarily
in Angular projects (for which most sources are TypeScript), this should
be acceptable.

PR Close #37196

dev-infra/utils/ts-node.ts

@@ -0,0 +1,17 @@
+/**
+ * @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
+ */
+
+/** Whether ts-node has been installed and is available to ng-dev. */
+export function isTsNodeAvailable(): boolean {
+  try {
+    require.resolve('ts-node');
+    return true;
+  } catch {
+    return false;
+  }
+}