ssbc/is-my-ssb-valid

`is‑my‑ssb‑valid` is a tiny helper library for Scuttlebutt (SSB) developers that creates message validators from standard JSON‑Schema definitions. It wraps the `is‑my‑json‑valid` validator and returns a function that can be used to check full SSB messages, their values, or their content, exposing any schema or custom‑validation errors via `errors` and `errorsString`. The package is aimed at SSB app authors who need a simple way to enforce the structure of protocol messages such as profiles, contacts, or any custom types.