Update import_data.rake

lib/tasks/import_data.rake

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+namespace :granblue do
+  desc "Import weapon, summon and character data from db/seed/updates. Use TEST=true for test mode."
+  task import_data: :environment do
+    require 'csv'
+    Dir[Rails.root.join('lib', 'granblue', '**', '*.rb')].each { |file| require file }
+
+    test_mode = ENV['TEST'] == 'true'
+    importer = Granblue::DataImporter.new(test_mode: test_mode)
+    importer.process_all_files
+  end
+end