[Draft] UI Module prototype

[KazuhiroItoh]

I have created a prototype version for the purpose of verifying the UI Module design notes.

This prototype implements the addition of Config nodes and support for existing functions, and the layout function of UI modules and the display of widgets in modules on the dashboard are not implemented.

I have created a document that summarizes the outline of the corrected part, the operation procedure for checking the operation, and the problems found in the verification. I would appreciate it if you could refer to it. URL: https://github.com/node-red-hitachi/node-red-notes/blob/master/UI-Module/UI-Module-prototype.pptx