Make displaying application used to toot opt-in (#9897)

* Make storing and displaying application used to toot opt-in

* Revert to storing application info, and display it to the author via API

app/models/account.rb

@@ -109,6 +109,7 @@ class Account < ApplicationRecord
            :staff?,
            :locale,
            :hides_network?,
+           :shows_application?,
            to: :user,
            prefix: true,
            allow_nil: true

app/models/user.rb

@@ -100,7 +100,7 @@ class User < ApplicationRecord
 
   delegate :auto_play_gif, :default_sensitive, :unfollow_modal, :boost_modal, :delete_modal,
            :reduce_motion, :system_font_ui, :noindex, :theme, :display_media, :hide_network,
-           :expand_spoilers, :default_language, :aggregate_reblogs, to: :settings, prefix: :setting, allow_nil: false
+           :expand_spoilers, :default_language, :aggregate_reblogs, :show_application, to: :settings, prefix: :setting, allow_nil: false
 
   attr_reader :invite_code
 
@@ -244,6 +244,10 @@ class User < ApplicationRecord
     @aggregates_reblogs ||= settings.aggregate_reblogs
   end
 
+  def shows_application?
+    @shows_application ||= settings.shows_application
+  end
+
   def token_for_app(a)
     return nil if a.nil? || a.owner != self
     Doorkeeper::AccessToken