Summary:
related to T12015
- error.hpp covered
- assemble_op.hpp fully covered
- malformed_pubrel test is now functional
- attempt at using fixtures in malformed_packet.cpp test suite to
lower the amount of copy-paste code lines
- test coverage ~89%
Reviewers: ivica
Reviewed By: ivica
Subscribers: miljen, iljazovic
Differential Revision: https://repo.mireo.local/D27395
