generate separate jar with sources with OSGi headers
generate separate jar with sources with OSGi headers

Signed-off-by: Gunnar Wagenknecht <79778dbbdd172ad4142b370229409ecedf95bcb5@wagenknecht.org>
exabrial/logback-gelf,Moocar/logback-gelf,captaininspiration/logback-gelf