move sparkleTime into sparkle subdirectory
Add kafka loader subproject
. refactor into BuildSettings to keep Build clean
. add kafka dependency (with some required dependency exclusion surgery)
. refactor build dependencies for clarity and to share with kafka loader

Basic reader and writer layer for kafka topics
. Write iterable or observable streams
. Read observable streams
. typeclass based encoder/decoders for kafka data
. end to end test integration test for kafka string encoded data
. conf file control for kafka reader and writer clients

Added some license headers