* fix mllama convert
- transform attn_gate and ffn_gate
- swap attention heads for vision models
* fix mllama
the mlp gate which was applied in the wrong place
Mistral is a popular research lab making open source models. This updates
the forward pass of llama architecture models to support both llama models
and mistral models by accounting for additional metadata present in mistral
models, and finding the correct dimensions for the output projection.
