Merge branch '10.initial-obelisk-project' into 'main'

.gitlab-ci.yml

obelisk/.gitignore

obelisk/.obelisk/impl/default.nix

obelisk/.obelisk/impl/github.json

obelisk/.obelisk/impl/thunk.nix

obelisk/backend/backend.cabal

obelisk/backend/frontend.jsexe

obelisk/backend/frontendJs/frontend.jsexe

obelisk/backend/src-bin/main.hs

obelisk/backend/src/Backend.hs

obelisk/backend/static

obelisk/cabal.project

obelisk/common/common.cabal

obelisk/common/src/Common/Api.hs

obelisk/common/src/Common/Route.hs

obelisk/config/common/example

obelisk/config/common/route

obelisk/config/readme.md

obelisk/default.nix

obelisk/frontend/frontend.cabal