* feat: Add user flags concept, for tracking bits on a user
* feat: Example flag usage for user invite resend abuse
* wip
* test
* fix: Set correct flag
This PR moves the entire project to Typescript. Due to the ~1000 ignores this will lead to a messy codebase for a while, but the churn is worth it – all of those ignore comments are places that were never type-safe previously.
closes#1282