Saga pattern (#1062)

* init repo for role object

* add to init

*  add to init

*  add first impl

*  add pattern

*  add license

*  add changes

*  add saga init dsc

* add init saga dsc

*  add changes to dsc

*  add

*  add orchestrator

*  add ch

* separate pkgs

*  add info

*  add choreogr

*  rem space

*  change according to cgeckstyle

*  add changes according to google style