Update LLM support for llama.cpp and enhance configuration management

- Added support for `llamacpp-models.yaml` in `.gitignore` and implemented logic to copy it in `gpu-rent.ps1` and `gpu-rent.sh`.
- Enhanced CLI to prompt for llama.cpp model presets during setup and execution, improving user experience.
- Updated configuration handling to include `llamacpp_models_manifest` and related functions for managing llama.cpp models.
- Improved documentation in `cli.md` and `llm.md` to reflect changes in llama.cpp integration and model management.
- Refactored provisioning logic to handle llama.cpp model downloads and configurations effectively.

gpu-rent.sh

@@ -99,6 +99,10 @@ if [[ ! -f "$ROOT/ollama-models.yaml" && -f "$ROOT/ollama-models.example.yaml" ]
   cp "$ROOT/ollama-models.example.yaml" "$ROOT/ollama-models.yaml"
   echo "gpu-rent: created ollama-models.yaml"
 fi
+if [[ ! -f "$ROOT/llamacpp-models.yaml" && -f "$ROOT/llamacpp-models.example.yaml" ]]; then
+  cp "$ROOT/llamacpp-models.example.yaml" "$ROOT/llamacpp-models.yaml"
+  echo "gpu-rent: created llamacpp-models.yaml"
+fi
 if [[ ! -f "$ROOT/gpu-rent.vars" && -f "$ROOT/gpu-rent.vars.example" ]]; then
   cp "$ROOT/gpu-rent.vars.example" "$ROOT/gpu-rent.vars"
   echo "gpu-rent: created gpu-rent.vars"