feat: Add language-agnostic JSON interface and CLI for cross-language Shield usage#2

Philippoes merged 12 commits intomainstakekit/shield:mainfrom

eng-604-define-the-validators-for-using-in-different-languages-so-westakekit/shield:eng-604-define-the-validators-for-using-in-different-languages-so-weCopy head branch name to clipboard