This is fist part for achievement related command set.
Edition commands will added in some later commits when ready.
Two command added:
* .lookup achievment $partname - show fit achievements
(id, shiftlink, complete date for selected player).
shiftlink included similar data as generated by client for achievement shift-link
(complete state, complete date, marked completed criteria).
* .character achievements [$playername] - show completed achievements for selected player
