Shortcode config duplicates

[DKudleichuk]

Currently we have the same config in shortcode_name/config.php and shortcode_name/shortcode.php

i understand that this was done to allow shortcode work without JS Composer, but, how often we use shortcodes without JS Composer plugin?

is it possible to use vc_map_get_attributes() instead of shortcode_atts() in shortcode.php