* refactoring

- get rid of much of the code duplicates by moving functionality to base
class PropertyBase
- make timestamp handling more consistent
- make data consistency group usage more consistent accross different classes
- formal code style fixes
- some formal code cleaning and documentation

* copyright headers

* apply clang-format-14 -i <files>
* fix include order where messed up by autoformat

* docu for D_xy
* enable ZMQ for D_xy

* reduce number of linter warnings

* PropertyBase as seperate file

* put error into ZMQ status

Co-authored-by: Dietrich Rothe <dietrich.rothe@desy.de>
Co-authored-by: Martin Hierholzer <martin.hierholzer@desy.de>