[FEATURE] Bundles should be able to generate globals values inside the stack

[Wihrt]

Is your feature request related to a problem? Please describe.
I would like to be able to generate globals directly inside the stack generation.

Describe the solution you'd like
A clear and concise description of what you want to happen.

define bundle stack "foo" {
  metadata {
    path        = tm_slug(bundle.input.name.value)
    name        = bundle.input.name.value
  }
  
  globals {
    bar = "somevalue"
  }
}

This should generate something like (virtually or not)

stack {
  id = "20910e70-71f8-4be4-9117-3d49d5c60053"
}

globals {
  bar = "somevalue"
}

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

N/A

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