FP-161: first functional version of the Any23 transformer

* Implemented as async Transformer
    * keeps source and transformed resources in XZ compressed temp files on disc (to also support huge files)
    * uses a configureable Threadpool (ExecutorService) for processing requests
* Full set of Unit Tests covering all supported features

* supports
   * CSV
   * RDFa, Microformat and Microdata embedded in HTML and XHTML
   * transcoding validation and fixing from any RDF format to text/turtle

Areas where improvements is needed
   * base URI: Currently the URI of the Job is used what is definitely not a good thing
   * configuration: Currently the Any23 default configuration is used. Need to further investigate available configuration options and also how to configure them via the transformer API