[RFC] Add `hide_if_blank` field option

[adrianthedev]

Context

There are times when we use a model that can belong to multiple adapters and we have their id's in the database. But once you set an adapter to the record you don't want to see the other adapters.

This option will hide the field if the value is nil.

# Before
field :stripe_id, as: :text, visible: -> { record.stripe_id.present? }
field :paddle_id, as: :text, visible: -> { record.paddle_id.present? }
field :braintree_id, as: :text, visible: -> { record.braintree_id.present? }

# After
field :stripe_id, as: :text, hide_if_blank: :all
field :paddle_id, as: :text, hide_if_blank: :all
field :braintree_id, as: :text, hide_if_blank: :all

The hide_if_blank option will take the view in which to be applied if the condition is valid. It can be one of the following: :index, :show, :edit, :new, :forms, :display, :all.

System configuration

Avo version: Avo 3 and up