(calculate efficiently the number of calculations)

(basically json parse)

Integrated Pipeline: reimplementation of Zip-unpacking logic to work with MessageProcessor infrastructure

adding sample files of deploying nexus on kubernetes to kubernetes-examples 

Integrated Pipeline: added class ArchiveCleanUp to integrate rawdata archive handling into stream abstraction layer

Integrated Pipeline: added class archiveUnpacker to integrate rawdata archive handling into stream abstraction layer

 * known metainfos
 * handle circular deps
 * log file with error

Integrated Pipeline: renamed some case classes to make separation between TreeScanSignals and FileParsingSignals more clear

-new name makes the difference between "scanning" a file tree for candidate calculations and
 the actual "parsing" of individual files to extract meta-info more clear

Integrated Pipeline: added event for TreeParser processing failures that invalidate entire file trees

Integrated Pipeline: EventLogger now uses Log4j2 Scala API for logging, moved log4j2 test config file to test resources