docs: Dependency Injection guides for CLI

[wardbell]

Issue #19510

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/angular/angular/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

[mary-poppins]

You can preview a056241 at https://pr19892-a056241.ngbuilds.io/.

[vicb]

missing:

• target label
• merge label
• green CI

[IgorMinar]

lgtm for navigation.json changes. the ci is still failing so this can't be merged until that is resolved.

[mary-poppins]

You can preview 128a27b at https://pr19892-128a27b.ngbuilds.io/.

[mary-poppins]

You can preview 319ccfb at https://pr19892-319ccfb.ngbuilds.io/.

[mary-poppins]

You can preview 94eb9ce at https://pr19892-94eb9ce.ngbuilds.io/.

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}