Add customizable menu order for user accounts (#44)

* Add customizable menu order for user accounts

Introduces a MenuOrder model and concern to allow users to select their preferred account ordering (by name or balance, ascending or descending). Adds a default_order field to users, updates user preferences UI, and applies the selected order to balance sheet account listings.

* Rename MenuOrder to AccountOrder and update user order field

Refactors the MenuOrder model to AccountOrder and updates all references accordingly. Replaces the user's default_order field with default_account_order, including migration changes, validations, and form fields. Updates localization and schema to reflect the new naming.

* Update balance_sheet.rb

* Fix for nil Current.user when rake runs in balance_sheet model

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Signed-off-by: Aluisio Pereira <oaluiser@gmail.com>
Co-authored-by: Juan José Mata <juanjo.mata@gmail.com>

app/models/user.rb

@@ -15,6 +15,7 @@ class User < ApplicationRecord
   validates :email, presence: true, uniqueness: true, format: { with: URI::MailTo::EMAIL_REGEXP }
   validate :ensure_valid_profile_image
   validates :default_period, inclusion: { in: Period::PERIODS.keys }
+  validates :default_account_order, inclusion: { in: AccountOrder::ORDERS.keys }
   normalizes :email, with: ->(email) { email.strip.downcase }
   normalizes :unconfirmed_email, with: ->(email) { email&.strip&.downcase }
 
@@ -163,6 +164,10 @@ class User < ApplicationRecord
     !onboarded?
   end
 
+  def account_order
+    AccountOrder.find(default_account_order) || AccountOrder.default
+  end
+
   private
     def ensure_valid_profile_image
       return unless profile_image.attached?