…nhanced details (#7061)

* feat: Fold multiArgCheck logic in get and also return descriptive errors

Changes:

feat(spanner): rewrite signatures and type in terms of new location

feat(bigquery): rewrite signatures and type in terms of new location

feat(pubsub): rewrite signatures and type in terms of new location

feat(firestore): rewrite signatures and type in terms of new location

feat(errorreporting): rewrite signatures and type in terms of new location

feat(aiplatform): rewrite signatures and type in terms of new location

feat(logging): rewrite signatures and type in terms of new location

feat(datastore): rewrite signatures and type in terms of new location

feat(compute): rewrite signatures and type in terms of new location

feat(pubsublite): rewrite signatures and type in terms of new location

- Refresh the admin/apiv1 library. Keeping it out of auto generation due to conflicts in handcrafted files living alongside the client.
- Start generating a gapic for apiv1
- Start generating stubs dirs for both

🤖 I have created a release *beep* *boop*
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## [1.28.0](https://togithub.com/googleapis/google-cloud-go/compare/pubsub/v1.27.1...pubsub/v1.28.0) (2022-12-05)


### Features

* **pubsub:** rewrite signatures and type in terms of new location ([620e6d8](https://togithub.com/googleapis/google-cloud-go/commit/620e6d828ad8641663ae351bfccfe46281e817ad))

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