Enhance device management and model handling in SnapForm

- Updated frame extraction logic to allow for single frame extraction.
- Integrated model readiness checks for BEN2 and DA3 models in relevant operators.
- Added directory name attribute to model specifications for better organization.
- Improved device selection logic for production and debug tasks.
- Refactored preferences to expose device settings and ensure they reflect available hardware.
- Enhanced runtime device detection and management, including support for CUDA and MPS.
- Updated tests to cover new device management features and model directory handling.
- Removed deprecated download model tests to streamline codebase.

pyproject.toml

@@ -7,5 +7,8 @@ requires-python = ">=3.11"
 license = "GPL-3.0-or-later"
 dependencies = []
 
+[dependency-groups]
+dev = ["pytest"]
+
 [tool.uv]
 package = false