Update Ollama model configurations and documentation for clarity and consistency

- Revised model descriptions in `ollama-models.example.yaml` to emphasize uncensored and abliterated requirements, enhancing user understanding.
- Updated documentation in `llm.md` to reflect changes in model tags and their meanings, ensuring accurate guidance for users.
- Modified CLI help messages to clarify the nature of presets, reinforcing that all options are abliterate models with Russian support.
- Enhanced the `llm_runtime.py` file to align preset labels with the updated model descriptions, improving consistency across the codebase.

src/gpu_rent/cli.py

@@ -398,7 +398,7 @@ def open(
 def setup(
     llm: Optional[str] = typer.Option(None, "--llm", help="none|ollama"),
     ollama_preset: Optional[str] = typer.Option(
-        None, "--ollama-preset", help="recommended|light|stock|text|big|empty"
+        None, "--ollama-preset", help="recommended|light|text|big|empty (все — abliterate + RU)"
     ),
     watchdog: Optional[bool] = typer.Option(
         None, "--watchdog/--no-watchdog", help="Поставить local-watchdog"