rework: rename sdbapi to api, redo data structure

feat(sdbapi): handle startup errors "gracefully"

feat(sdbapi): set ulimits

feat(sdbapi): endpoint for joining games

feat(sdbapi): endpoint for getting own games

feat(sdbapi): endpoint for patching game state

feat(sdbapi): endpoint for all forming games

WIP(sdbapi): comment out future endpoints

feat(sdbapi): init game management apis

Change how user details are fetched

Basic API with register and login (#1)

Reviewed-on: https://src.quest/skye/deck-builder/pulls/1