Resolve #3484354 "Optional CDN"

Closes #3484354

config/install/jsnlog.settings.yml

 enabled: 1
 logging_type: 'console'
-library_type: 'min'
+library_type: 'ext'
 debug_level: 5000
 user_agent_regex: ''
+cdn: 'https://cdnjs.cloudflare.com/ajax/libs/jsnlog/2.30.0/jsnlog.min.js'
 visibility:
   request_path_mode: 0
   request_path_pages: ''