Example suggestion: import alias with `as`

Example:
```
app [main] { pf: platform "https://github.com/roc-lang/basic-cli/releases/download/0.10.0/vNe6s9hWzoTZtFmNkvEICPErI9ptji_ySjicO6CkucY.tar.br" }

import pf.Stdout
# use `as` to define an import alias 
import pf.Task as T

main =
    _ <- Stdout.line "hey" |> T.await
    Stdout.line! "Hello, World!"
```
We should use a simple example like this but without backpassing