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