Add Section for Docs regarding SCS Developers

[maxwolfs]

This PR adds a second section for documentation regarding the development of SCS, especially targeting SCS Developers. This makes it easier to distinguish between the target groups / roles of Operators and Developers. The main docs path in the files system, is for the operator docs. The developer docs are 'dev-docs'. This is reflected in the urls and routing.

Currently there are only two IAM documents, where there is still the question if they aren't part of the standards drafts? see #72 @reqa

The SCS Zuul User Docs should also reside in the path of dev-docs.

Additionally the main nav is now directly addressing the roles / personas.

This will make it easier to set up the index page of https://docs.scs.community where we – SIG Documentation – want to establish starting points for the different site sections.

Thanks @fkr for the nice session!

[fkr]

Will this lead to 404 errors?

[maxwolfs]

It would yes, but those two documents/pages have not been listed anywhere on the docs page yet.

[fkr]

I was actually more worried about links from outside (eg. blogposts, other docs). I grepped through our stuff and didn't find any references. imho good to go. 👍🏻

[fkr]

LGTM - please see question regarding the filename change.

[master-caster]

I'm probably not perfectly qualified to do a full featured review on this topic.
LGTM as far as i can tell.

Adding Zuul quickstart guide to dev-docs works for me.
Is there a task left for me regarding the quick start guide?

[maxwolfs]

I'm probably not perfectly qualified to do a full featured review on this topic. LGTM as far as i can tell.

Adding Zuul quickstart guide to dev-docs works for me. Is there a task left for me regarding the quick start guide?

Yes, once this is merged the zuul quickstart guide has to be moved to dev-docs then.

[maxwolfs]

I'm probably not perfectly qualified to do a full featured review on this topic. LGTM as far as i can tell.
Adding Zuul quickstart guide to dev-docs works for me. Is there a task left for me regarding the quick start guide?

Yes, once this is merged the zuul quickstart guide has to be moved to dev-docs then.

I did it now within the last commit.