[Dev] general procedure for adding nonsystemd init scripts

[bill-auger]

we often get requests for init scripts, for some service that is
not working with openrc - have we converged on a convention for
how to add them?

surely there are different ways it could be handled; but it
would be best if they were all done consistently

should they all go together in single package like
'nonsystemd-init-scripts', or should each be a separate package
like 'foo-init-scripts'?