Environment request type to have dataset per provider

[t-persson]

Description

Right now we stick the dataset onto the entire environment request. We might want our providers to say what they want in the dataset and only stick the dataset onto a provider. This way we won't "leak" dataset variables into every provider.

Additional Context

No response

Further links

https://github.com/eiffel-community/etos/blob/main/api/v1alpha1/environmentrequest_types.go#L61