Introduces `napi.CreateAyncWorker` for background tasks and
`napi.CreatePromise` for handling asynchronous operations via deferred
objects.
Refactors the module export registration to use `go:linkname`,
replacing the previous `entry.Register` function. Adds new examples
demonstrating these features and the updated export style.
Matheus Sampaio Queiroga
652638e8ee
