enhancement: namespaced actions generator (#3696)

Author: Paul-Bob

lib/generators/avo/action_generator.rb

@@ -11,7 +11,7 @@ class ActionGenerator < NamedBaseGenerator
       namespace "avo:action"
 
       def create_resource_file
-        template "action.tt", "app/avo/actions/#{singular_name}.rb"
+        template "action.tt", "app/avo/actions/#{name.underscore}.rb"
       end
 
       def configuration_options