[Feature] AnythingLLM use locally hosted Llama.cpp and GGUF files for inferencing (#413)

* Implement use of native embedder (all-Mini-L6-v2)
stop showing prisma queries during dev

* Add native embedder as an available embedder selection

* wrap model loader in try/catch

* print progress on download

* add built-in LLM support (expiermental)

* Update to progress output for embedder

* move embedder selection options to component

* saftey checks for modelfile

* update ref

* Hide selection when on hosted subdomain

* update documentation
hide localLlama when on hosted

* saftey checks for storage of models

* update dockerfile to pre-build Llama.cpp bindings

* update lockfile

* add langchain doc comment

* remove extraneous --no-metal option

* Show data handling for private LLM

* persist model in memory for N+1 chats

* update import
update dev comment on token model size

* update primary README

* chore: more readme updates and remove screenshots - too much to maintain, just use the app!

* remove screeshot link