Chore: Switch from Carrierwave to ActiveStorage (#393)

app/models/user.rb

@@ -47,6 +47,7 @@ class User < ApplicationRecord
   include DeviseTokenAuth::Concerns::User
   include Events::Types
   include Pubsubable
+  include Avatarable
   include Rails.application.routes.url_helpers
 
   devise :database_authenticatable,
@@ -57,12 +58,6 @@ class User < ApplicationRecord
          :validatable,
          :confirmable
 
-  # Used by the actionCable/PubSub Service we use for real time communications
-  has_secure_token :pubsub_token
-
-  # Uses active storage for the avatar
-  has_one_attached :avatar
-
   # The validation below has been commented out as it does not
   # work because :validatable in devise overrides this.
   # validates_uniqueness_of :email, scope: :account_id
@@ -108,14 +103,6 @@ class User < ApplicationRecord
     Rails.configuration.dispatcher.dispatch(AGENT_REMOVED, Time.zone.now, account: account)
   end
 
-  def avatar_url
-    if avatar.attached? && avatar.representable?
-      url_for(avatar.representation(resize: '250x250'))
-    else
-      ''
-    end
-  end
-
   def push_event_data
     {
       name: name,