Add package data for GPU rent and update CLI documentation

- Added package data configuration for the 'gpu_rent' package in pyproject.toml.
- Updated README.md to include usage instructions for Windows and Unix launchers.
- Enhanced CLI documentation in cli.md to reflect new commands and their functionalities.
- Revised setup.md to clarify installation steps and environment setup.
- Improved error handling and command descriptions in the CLI implementation.
- Added new functions for model version handling and flavor resolution in the codebase.
- Updated state management to include additional properties for better tracking.

src/gpu_rent/state.py

@@ -28,6 +28,13 @@ class SessionState:
     created_at: str | None = None
     unshelved_at: str | None = None
     notes: dict[str, Any] = field(default_factory=dict)
+    floating_ip_id: str | None = None
+    network_id: str | None = None
+    security_group_id: str | None = None
+    image_id: str | None = None
+    availability_zone: str | None = None
+    spot: bool = True
+    bootstrapped: bool = False
 
     def to_dict(self) -> dict[str, Any]:
         return asdict(self)