Describe the feature

Create an add-provider command that guides users through the remote cache provider creation flow, prompting for environment variables, keys, and any other values needed to set up a remote cache provider.

Motivation

Currently, the CLI sets up local cache for the user by default.

In the create app flow, we prompt the user for a remote cache provider:

◆  Which remote cache provider do you want to use?
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In my opinion, we should drop it because it enables a "half-baked" feature for the user. Also, we don't mention all the options that we have (S3, R2, etc.).