Tagged release v3.28.0

241df2b feat(polymodel address): implement MultiAddress model
5a98821 fix(commands): added document check for move_registry_document command
e9ce3a3 fix(document scope command): fixed documents type
fe82720 refactoring(commands): rewrite protect command
f7caa23 fix(env vars): changed document url to url type instead of str, refactored document upload
0db84d4 fix(commands): registered move_registry_document command