Convert gl-sdk NAPI bindings from Synchronous to Aynchronous calls

[ShahanaFarooqui]

In the initial implementation, I overlooked adding asynchronous handling to all I/O-bound NAPI bindings. Since gl-sdk exposes a synchronous Rust API, we use tokio::task::spawn_blocking instead of native async/await. This ensures blocking operations are offloaded to a thread pool and do not impact the Node.js event loop.

• Breaking Changes: All affected methods now return a Promise on the JavaScript side. Callers must update their usage to await these methods.
• Additional Changes: Adds the missing bindings-typescript task.

Continued after:
Add TypeScript support via N-API (#659)

[ShahanaFarooqui]

Closing because these commits are already covered in #667