Add more documentation about how to work with existing resources (import/alteration)

[remyleone]

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Description

I have not found tutorials or guides that explain how I can re-use existing resources and existing state.
I've searched here:

• https://learn.hashicorp.com/tutorials/terraform/cdktf-applications
• https://www.terraform.io/docs/cdktf/index.html

Maybe using https://www.terraform.io/docs/cdktf/concepts/data-sources.html could be an option but it seems to be quite verbose. Is there an easier way to import an existing resource within the state managed by the CDK?
If it is the only way, maybe adding a tutorial/guide to focus on this importing workflow could be helpful. Especially if it combines discovered aspects (tags) to apply different treatments (use tags as an input of a function that will apply other tags to the given resource).

[jsteinich]

Data sources don't actually import the resource into state. They basically function as a lookup into the already provisioned infrastructure.

Actually importing is probably more work as it requires creating code that matches the existing infrastructure and then running terraform import for each resource. Definitely room for some improvements to that process.

[ansgarm]

(linking Support terraform import via the cdk cli #1134 for reference)