Provide a `napi_create_buffer` implementation using Buffer

The current implementation of `napi_create_buffer` uses a `TypedArray` under the hood, which has slightly different characteristics compared to a `Buffer`. To ensure consistency in the underlying structure, we should provide a proper implementation that aligns with the behaviour of `Buffer`.

Reference: [Buffers and TypedArrays](https://nodejs.org/api/buffer.html#buffers-and-typedarrays)