chore: setup rescript frontend and dream backend

.gitignore

bsconfig.json

client/index.html

client/public/favicon.svg

client/public/global.css

client/src/App.css

client/src/App.res

client/src/App.resi

client/src/Main.res

client/src/logo.svg

dune

dune-project

esy.json

esy.lock/.gitattributes

esy.lock/.gitignore

esy.lock/index.json

esy.lock/opam/angstrom.0.15.0/opam

esy.lock/opam/base-bigarray.base/opam

esy.lock/opam/base-bytes.base/opam

esy.lock/opam/base-threads.base/opam