[gguf types] Add missing types & make existing types stronger

[mishig25]

#562 adds initial typing to @huggingface/gguf package.

However, not all architectures are added in #562. (see here & here). For example, one can add mamba & type mamba specific fields (i.e. mamba.ssm.inner_size. See RWKV-specific typing for inspiration

huggingface.js/packages/gguf/src/types.ts

Line 117 in 81e6ce1

export type RWKV = ModelBase<"rwkv"> & { "rwkv.architecture_version": number };

[julien-c]

if anyone from the comunity wants to take some of this, feel free!