Heavily reafoctored the test repository in order to enable a proper

workflow for all Argo components

Refactor argotk and the library for using an output directory. Move to
shakebuild. Associated readme update. Gitlab-ci file update.
Argotk.hs is packaged in a derivation.
1 job for refactor-argotk-cherrypicked in 6 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed #16286
integration
integration.test

00:00:06