adderal.dsl: import cleanup

Remove unused imports.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
bin/adderall: New helper script

This helper script launches a Hy REPL with adderall already imported &
macros required. The main aim is for experimentation and debugging.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>