Right now this is just a sketch for a larger idea of writing a binary called
`create-installer` (see docs).
Change-Id: Ib8e2acfd5d350ccc344329d87983c415f166d02b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4358
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
