[FEATURE] Get access to stack metadata from a bundle

[Wihrt]

Is your feature request related to a problem? Please describe.

Currently, of you want to pass values between stacks, you have multiple option, but none of them works really good with bundles :

• Using terraform_remote_state, but how to get the backend path if you are using stack_id ?
• Using sharing_backend feature, but in order to be precise, you need to pass the stack_id somehow
• There is no link between Bundles and Templates. Except through Components.
• Bundles cannot generate globals in the stack
• Bundles exports can not access to the terraform state or outputs values (and it's okay).

Describe the solution you'd like
I would like inside the bundle to have access to the stack(s) metadata

{
      "alias" = "foo"
      "class" = "whatever"
      "uuid" = "2101e0e5-90e0-4221-a868-416d14b92ee1"
      // Other bundle informations removed for clarity
      "stacks" = [
        "stack1" {
          id = "uuidv4"
          // Other stack metadata
        }
      ]
    }

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

I have found workaround to make it work, but there are painful, and not really usable in the long term.
I will add what I have got right now to make it work.

Additional context
Add any other context or screenshots about the feature request here.

No more context