Returns the default backend for the current iOS platform.

Checks if EMLX is available.

Example: Simple neural network layer using Axon on iOS.

Note: Axon is pure Elixir and works on any platform with Nx. This is just an example - Axon needs to be added as a dependency.

Runs inference with a model using the best available backend.

Initializes Nx with the best available backend for iOS.

Priority:

1. EMLX (if available) - best for Apple Silicon
2. Nx default (pure Elixir fallback)

Loads a pre-trained model for inference on iOS.

Note: This is a placeholder. In practice, you would:

1. Train or download a pre-trained model
2. Serialize it (Axon supports serialization)
3. Load it here for inference

Creates a tensor on iOS with platform-appropriate backend.