Parse and serve fresh Belarusian dump of restricted sites

Use https://github.com/usher2/dump-by-upload as dump sources server
Unsigned Belarusian dumps in the res folder for test purpose (git lfs)

IMPORTANT NOTE

This program is a part of Usher2 ecosystem. The gRPC service will never be published

USE

First the program tries to parse a dump.xml file if it exists
Then the program periodically tries to fetch a dump from a dump sources server

FEATURES

Native IPv4 string to 32-bit integer implementation
gRPC service for check IPv4, URL, Domain

WARNING

Stream parsing a <resource>...</resource> object is not a good idea. Because we need some checksum on updates before data applying. So I use Decode() method for <resource>...</resource> parsing
I don't trust to any data. I'm not trying to guess unknown errors. Only known patterns. Belarusian officials are such entertainers

TODO

Native RFC3339 parsing
~~gRPC service for check IPv4, URL, Domain~~
Stream parsing every <resource>...</resource> object including unchanged is the subject for discussion