SI: All new codes schema 1.3.0 from NB (ACC) (#353)

* First samples using https://github.com/ixtlan-team/dgc-java based on https://github.com/DIGGSweden/dgc-java

* Revert "First samples using https://github.com/ixtlan-team/dgc-java based on https://github.com/DIGGSweden/dgc-java"

This reverts commit a229148.

* Slovenian test cases made with https://github.com/ixtlan-team/dgc-java

* Sample files from Slovenia using ACC DSC (#77)

This commit updates samples from Slovenia. Much has changed:
- The samples are now signed using DSC from ACC environment.
- At the moment DSC is not yet available in ACC as we are waiting for the EC team to complete the inclusion of our NB certs
- DSC is created as recommended on onboarding documents (EC)
- DGCs are created usign dgc-java project that Slovenia is using for our implementation

* Fixing standardized names (#220)

* Fixing standardized names (#220)

* Update 1.json

* New vac samples and added test and rec samples. All signed with DSC from ACC.

* Fixing the incorrenct DSC used for previous commit

* Samples changed after dgc-java modified

* Fixing number of digits in  fractions to 6

* SI: All new codes now issued by NB - ACC

* Added EXPECTEDRESULTS array for validation

Co-authored-by: Jože Mlakar <JozeM@ixtlan-team.si>