Sketch prototype that lifts ordinary Scala code to ZFlow / Remote using Scala 3 macros

[jdegoes]

A prototype that is incomplete could demonstrate the feasibility of lifting ordinary Scala code into ZFlow:

ZFlow.define {
  if (2 + 2 == 4) "foo" else "bar"
} : ZFlow[Any, Nothing, String]

[vigoo]

Depends on https://github.com/zio/zio-flow/issues/225