SMS Web Generic
Framework-agnostic webhook processing for smskit.
This crate provides [WebhookProcessor], which takes an
[InboundRegistry] of providers and handles the full
verify → parse → respond pipeline without coupling to any HTTP framework.
Framework adapters (sms-web-axum, sms-web-warp, etc.) convert their
native request/response types to/from the generic types defined here
using [HeaderConverter] and [ResponseConverter].