feat(angular): deprecate ngrx generator

[Coly010]

Current Behavior

NgRx is deprecated since the addition of ngrx-root-store and ngrx-feature-store.
It is not marked as deprecated.

Expected Behavior

Mark it as deprecated.

On nx.dev, this will show as deprecated when visiting the actual generator's docs. Ben has a todo task to show a "Deprecated" badge on the plugin's generator list page.
When running the command, a warning is logged about it being deprecated.

Related Issue(s)

Fixes #

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
nx-dev	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 11, 2023 3:01pm

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✅ Successfully ran 8 targets

• nx affected -t e2e-macos --parallel=1 --base= --head=
• nx affected --target=e2e --base=f2e48e429a6e7d783139eb8440ef0555fa8b946b --head=e9a7d8a21eccefeaa657bdd7950038c0b1ad808f --parallel=1
• nx affected --target=test --base=f2e48e429a6e7d783139eb8440ef0555fa8b946b --head=e9a7d8a21eccefeaa657bdd7950038c0b1ad808f --parallel=1
• nx affected --target=build --base=f2e48e429a6e7d783139eb8440ef0555fa8b946b --head=e9a7d8a21eccefeaa657bdd7950038c0b1ad808f --parallel=3
• nx run-many -t check-imports check-commit check-lock-files depcheck check-codeowners --parallel=1 --no-dte
• nx affected --target=lint --base=f2e48e429a6e7d783139eb8440ef0555fa8b946b --head=e9a7d8a21eccefeaa657bdd7950038c0b1ad808f --parallel=3
• nx-cloud record -- nx format:check --base=f2e48e429a6e7d783139eb8440ef0555fa8b946b --head=e9a7d8a21eccefeaa657bdd7950038c0b1ad808f
• nx documentation --no-dte

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[github-actions]

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