OSGi Support

[stoicflame]

This basically involves updating the pom.xml files to produce bundles instead of plain jars. Bundles are still jars but have extra meta-data in the manifest that describe the import, exports, etc. Bundles can work in or out of an OSGi container. Outside the container they are seen as a regular jar.

To OSGi enable gedcomx the pom.xml files need to be updated to use the maven-bundle-plugin so that the proper manifest entries get defined.

See FamilySearch/gedcomx#102