RPC auto unban on add peer

[rfreemobile]

https://github.com/yedino/galaxy42/pull/416/files

as commented there, the RPC should have option whether we should auto-unban or not

@robertoleksy @mikurys @woskov

[tx1683]

Moved to: https://git.yedino.org/yedino/galaxy42/issues/601