[Package Request] ntopng

[ringfeart]

Name: ntopng
Description: ntopng is the next generation version of the orginal ntop, a network traffic probe that monitors network usage.
Websites: https://www.ntop.org/ https://github.com/ntop/ntopng
Software documentation: https://www.ntop.org/guides/ntopng/
Build/Installation documentation: https://www.ntop.org/guides/ntopng/what_is_ntopng.html#installation
Source code: https://github.com/ntop/ntopng
License: GPL3, Community Edition

In this thread ntop/ntopng#2118 I asked howto update the Synology package from 3.8.1.1 to 4.0 (stable version), because there's an issue of seeing the Top HTTP Sites.

So a package request for ntopng version 4.0.
Version 3.8.1.1 is made by contributor hgy59. (many thanks to him!)

Another question: Do I need nprobe for using ntopng on a Synology DS216+II?
If so, how to do?

Thanks in advance!!