* Decouple loading of provider metadata from processor and moved in the base library.
* Integrate new code into checker and aggregator
* Adhere to csd02 revision of CSAF 2.0.
resolve #60
* Add util function to check a filename for confirming to csaf-v2.0-csd02.
* Add code to reject bad filenames in provider, checker, aggregator and uploader.
* Factor JSON evaluation and construction base URLs out of of checker.
* Move json path matching to util.
* Add csaf_aggregator (as additional command)
* Improve itest workflow to checkout the branch where it is running on.
resolve #105
resolve #72
Co-authored-by: tschmidtb51 <65305130+tschmidtb51@users.noreply.github.com>
Co-authored-by: Bernhard Reiter <bernhard@intevation.de>
Co-authored-by: Fadi Abbud <fadi.abbud@intevation.de>
