Auto-setup publication dependencies between git and annex remotes

[mih]

This becomes relevant after a merge of #106 and is related to datalad/datalad#4676

It should be easy enough with a pre-configured result hook, and a dataset procedure (cfg_osf_clone). Matching is trivial: host of the git-url matches node of the special remote configuration.

/tmp % datalad -f json_pp clone osf://q8xnk man
[INFO   ] Scanning for unlocked files (this may take some time)                              
{
  "action": "install",
  "path": "/tmp/man",
  "source": {
    "default_destpath": "q8xnk",
    "giturl": "osf://q8xnk",
    "source": "osf://q8xnk",
    "type": "giturl",
    "version": null
  },
  "source_url": "osf://q8xnk",
  "status": "ok",
  "type": "dataset"
}

/tmp % cd man
/tmp/man (git)-[master] % git cat-file blob git-annex:remote.log
7784367b-69c6-483d-9564-67f840715890 autoenable=true encryption=none externaltype=osf name=osf-storage node=q8xnk type=external timestamp=1593366915.629687527s