Llama-cpp-python

- (llama.cpp) Fix struct misalignment bug

- (llama.cpp) Update llama.cpp
- Fix docs for seed. Set -1 for random.

- (llama.cpp) Add full gpu utilisation in CUDA
- (llama.cpp) Add get_vocab
- (llama.cpp) Add low_vram parameter
- (server) Add logit_bias parameter

- Metal support working
- Cache re-enabled

- Fix broken pip installation

NOTE: This release was deleted due to a bug with the packaging system that caused pip installations to fail.

- Truncate max_tokens in create_completion so requested tokens doesn't exceed context size.
- Temporarily disable cache for completion requests