Add napi_buffer_detach()
Per https://github.com/nodejs/node-addon-api/issues/541, and given that detaching a buffer is part of the ES spec, we should likely make this available in a future version of N-API.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Per https://github.com/nodejs/node-addon-api/issues/541, and given that detaching a buffer is part of the ES spec, we should likely make this available in a future version of N-API.