Support multiple Medium users

[gomorizsolt]

Extracted from #68 (comment).

I can't really remember off the top of my head but we had some issues with supporting this feature. We also discussed this somewhere in the closed issues. Could anyone remember what they were exactly?

[gomorizsolt]

Found the issue, it seems we discussed something over the phone.

https://gitlab.com/c-hive/c-hive.dev/issues/20#note_199580936

[nkapolcs]

Good question! I am not sure, but I think because we want to start with MVP, that's why we made the decision to stay with one Github user, and one Medium user.

[gomorizsolt]

That makes sense, thanks. Let's leave this issue around then.

[gomorizsolt]

#111 (+ #117 => changes) makes the configuration so that it's now possible to display projects from various orgs/users. How about doing so in the case of articles? One thing that's worthwhile to keep in mind is that there's a slight difference between the URLs:

https://medium.com/feed/@zsgomori (user) vs https://medium.com/feed/c-hive (publication)

But it's rather something that's expected to be mentioned in the docs.

Proposals:

(1) Use an array of strings format.

medium:
   - "c-hive"
   - "@zsgomori"

(2) Option to set the maximum number of displayed articles per entry (therefore, the screen won't be "bloated" with dozens of articles). It'd be an optional setting.

medium:
   - org: "c-hive"
      limit: 5
   - org: "@zsgomori"

[gomorizsolt]

cc @thisismydesign

Let me know if any of the above makes sense. If so, I'll create follow-up issues and close this one.

[thisismydesign]

The proposal looks good. Let's keep this in the backlog for now, we can go with proposal 1 as a first step later.