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.

docs/cli.md

@@ -55,7 +55,7 @@ gpu-rent up --yes --ollama
 | `gpu-rent doctor` | Preflight **без** create. Exit ≠ 0 → сессию начинать нельзя |
 | `gpu-rent flavors` | Скан `SCAN_POOLS` × `FLAVOR_PREFERENCE`, список в текущем регионе |
 | `gpu-rent dry-run` | План без mutating-вызовов |
-| `gpu-rent up` / `up --yes` | Create/unshelve → bootstrap → optional LLM → **туннель** `:17801`. Ctrl+C = туннель off |
+| `gpu-rent up` / `up --yes` | Create/unshelve → bootstrap → optional LLM → **туннель** `:17801`. Без `--yes`: выбор flavor / data GB / preemptible, затем confirm. Ctrl+C = туннель off |
 | `gpu-rent up -v` / `--verbose` | Полная таблица doctor на `up` (по умолчанию кратко) |
 | `gpu-rent up --ollama` / `--llamacpp` / `--llm …` | LLM рядом со SwarmUI |
 | `gpu-rent up --no-update` | Без `git pull` SwarmUI/extensions (только недостающие clone) |