add RELATIVE-OID support
RELATIVE-OID is a standard type defined in ASN.1, as specified in ITU-T X.680.
Checklist
- Code modified for feature
- Test suite updated with functionality tests
- Test suite updated with negative tests
- Documentation updated
Reviewer's checklist:
- There is a test suite reasonably covering new functionality or modifications
- Function naming, parameters, return values, types, etc., are consistent with other code
- This feature/change has adequate documentation added
- No obvious mistakes in the code
Edited by gjeanneau6wind