Build foreign-libraries for elexis-3
[1603] Initial check-in Elexis core console application
[1403] ElexisEventDispatcher state guard
[1403] ElexisEventDispatcher state guard corrections
[1603] Add missing platzhalter resource files
[1603] Core Icon Set
[1603] UI Core
[1603] c.e.core.feature - full core feature (including ui)
[1603] Elexis Core Application & Feature
[1603] application and application feature - dependency corrections
Documentation fragment - feature structure image
Update README.md

Basic repository description
Adapted to first ch.elexis.core
Merge with old releng