Create documentation (wiki) how to use Self Reporting

[markusmann-vg]

Problem Description

With the new Self-Reporting Module, we have to tell users how to use it.
With a proper documentation in the wiki, that explains how to set it up (feature configuration), import/export data, process messages and delete self-reported messages this will do the job.

Proposed Solution

Add a new section in the wiki for self-reporting that can be used by the SORMAS Foundation to add a new chapter in the SORMAS manual

Additional Information

No response