feat: add prometheus and grafana dashboard for api monitoring

chore: change docker api directory

docs: add screenshots

fix: user can update reply now

fix: duplicate key error mongo

feat: add google oauth login

feat: add markdown comment in discussion

chore: add 404 page

fix: tailwind classes order and eslint errors

chore: update stripe subscription page

fix: linting errors and type errors

chore: add seed script

chore: add types and update font

chore: add avatar bg color

chore: change avatar provider