implement account locking/unlocking

app/controllers/locked_accounts_controller.rb

@@ -0,0 +1,10 @@
+class LockedAccountsController < ApplicationController
+  skip_before_action :redirect_locked_accounts
+  skip_after_action :verify_policy_scoped
+
+  def index
+    unless Current.account.locked?
+      redirect_to projects_path
+    end
+  end
+end