added support for urls in include markdown tag

[clubanderson]

I avoid registering the url to the file watcher so that "mkdocs serve" works fine, and mkdocs build also works. If an external url's content changes, then you would need to regenerate your docs.

[clubanderson]

Can I get a review on this PR please?

[clubanderson]

Can someone review?

[mondeja]

Thanks for the attempt and sorry for the delay.

[clubanderson]

logger looks good, plural works

WARNING - Not adding a watcher for https://docs.kubestellar.io/elapsed-time/scheduler.dmd of 'include-markdown' directive at Coding Milestones/PoC2023q1/kubestellar-scheduler.md:2 not detected in the file https://docs.kubestellar.io/elapsed-time/scheduler.dmd

I am computing the elapsed time of a GH workflow and storing it in our GH Pages branch. I can then use...

{%
   include-markdown "https://docs.kubestellar.io/elapsed-time/scheduler.dmd"
   start="<!--elapsed-time-start-->"
   end="<!--elapsed-time-end-->"
%}

to embed the output into my page. This is great

[clubanderson]

@mondeja ready for your review

[clubanderson]

@mondeja can you review? I would like to get this into production. Thank you

[clubanderson]

@mondeja can you review?

[mondeja]

Thanks, I'll continue the implementation and release a new version ASAP.