Annotations (#327)

* Add annotate gem to the project
* Annotate models, fixtures, factories and model_specs
* Keep annotations only in Models
* Remove unwanted changes in model specs
* Exclude auto_annotate_models from rubocop

app/models/telegram_bot.rb

@@ -1,3 +1,15 @@
+# == Schema Information
+#
+# Table name: telegram_bots
+#
+#  id         :integer          not null, primary key
+#  auth_key   :string
+#  name       :string
+#  created_at :datetime         not null
+#  updated_at :datetime         not null
+#  account_id :integer
+#
+
 class TelegramBot < ApplicationRecord
   belongs_to :account
   has_one :inbox, as: :channel, dependent: :destroy