Running larger MobileCLIP and AIMv2 on MLX

[maxlund]

It would be great to have an addition to the examples on how to run Apple's MobileCLIP and AIMv2 models on MLX.
Currently we only have the two smaller MobileCLIP versions in MLX format available, and there are no examples on how to encode text using the Zero-shot Adapted AIMv2. I'm curious to benchmark similar tasks against PyTorch with MPS or CUDA backends.

Maybe there is some conversion script I could run myself for MobileCLIP-B-LT?

AIMv2 already runs in MLX, just missing some MLX examples on how to encode text and run it in a different way than the other variants.