In workflows admin display the decision

[drjova]

We should display the decision inside the workflow detail page in admin.

We can achieve that by using inlines in the Admin configuration. Another example is in scoap3

Tech notes:

• Add an inline for decisions something like:

  class WorkflowsDecisionsInline(admin.StackedInline):
  model = Decision
  extra = 0
  can_delete = False
  show_change_link = True
  readonly_fields = [
   action,
   workflows,
    _updated_at
   user,
  ]

  and this should be added to WorkflowAdmin in the inlines

Acceptance:

• We have to display a list of decisions inside the workflow admin UI.
• Ensure that the user is also visible not just the user id