add: notice message skeletal code

app/libs/notice.rb

@@ -0,0 +1,21 @@
+module Notice 
+  class << self
+    def notice_config 
+      notice_config = {}
+
+      begin
+        config = Rails.application.config_for(:configuration).symbolize_keys!
+        notice_config = config[:notice].symbolize_keys!
+        raise 'notice config missing' if notice_config.blank?
+      rescue => exception
+        raise ex if Rails.env.production?
+
+        puts %Q{\033[33m [warning] gitea config or configuration.yml missing,
+                 please add it or execute 'cp config/configuration.yml.example config/configuration.yml' \033[0m}
+        notice_config = {}
+      end
+
+      notice_config 
+    end
+  end
+end