debci-worker: reduce dependencies?

[Christian Kastner <ckk@debian.org>]

Hi,

debci-worker currently depends on debci, and that pulls in quite a lot
of dependencies.

However, unless I'm mistaken, the worker stuff is actually very neat and
compact: it's all just a few clean shell scripts (except for one Ruby
script in the fake backend that could be converted to sh). Nothing seems
to be using the Ruby lib, and I'm not sure if anything is using devscripts.

Would you be open to an MR at some point that
  * splits out the common stuff, like the configuration handling of
    lib/environment.sh, into a debci-common package, upon which the
    other packages then would depend
  * Moves the worker stuff (backends, some of the bin) to debci-worker
  * Drops the debci dependency from debci-worker?

Or am I missing something?

Best,
Christian

PS: Emphasis on "at some point". I'm still getting a grasp of the
overall system.