chore: ✨ add guardfile dev

Author: lucas4tech

backend/Guardfile.dev

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+require 'dotenv'
+
+Dotenv.load!('.env.dev')
+
+guard :puma, port: ENV['PORT'] do
+ watch('Gemfile')
+ watch('Gemfile.lock')
+ watch(%r{^config.ru$})
+ watch(%r{^src/.*\.rb$})
+ ignore(%r{^tests$})
+end