rework: rename sdbapi to api, redo data structure

Merge branch 'dev'

feat(sdbapi): add pprof, ws, and echo test

chore(sdbapi): update dependencies and Go to 1.20

chore(sdbapi): add nhyoor.io/websocket dep

chore(sdbapi): update deps, testify non-indirect

Basic API with register and login (#1)

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