Expose the type of an asset handle

[waynemwashuma]

Objective

Expose the type of an asset directly on its Handle instance to allow type-aware operations and improve developer ergonomics.

Solution

Added a readonly type property to the Handle initialized from the owning Assets when the handle is constructed.

Showcase

const handle = assets.add(someAsset);
console.log(handle.type); // Logs the constructor of the asset

Migration guide

No breaking changes.

Checklist

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.