MyDHT usage example.

It implements a filestore, it is means to be a demo with as many option as possible (see json conf). This lead to a big binary and some useless config case.

It could be use as a sample. By removing some macro logic it could be use to build a simple filestore with decent size and compile time.

Test example is a remnant of main from mydht moved here for convenience.

TODO describe conf and retest it.

All current restriction to mydht applies here (tcp transport local only...)

Use cargo tool to build and test.

WIP