FR add tfe_registry_module data_source

[abuxton]

Use-cases

It would be beneficial to add a tfe_registry_modules data_source so that when migrating from TFE to TFC or between TFE/TFC instances the the tfe_registry_modules can be imported or appended to terraform code for a new IaC deployment.
currently, tfe_registry_module is limited to a resource

Attempted Solutions

N/A

Proposal

Add tfe_registry_modules data_source