[F] kline/xline/resv sync
[F] make an ability of using bandb instead of .conf files as bans storage
[F] drop non-TS6 (legacy protocol) support
+[F] Doxygen code documentation
[F] module engine rework
[F] more beautiful way of adding new channel modes by module
[F] make nick/user/host validation functions/match tables able to work in separated modules,