fix: centralize OPENVINO_PROVIDER_CONFIG and log SystemExit

Address Sourcery review feedback on PR #1879:

- Move OPENVINO_PROVIDER_CONFIG from _onnx_enhancer.py to
  platform_info.py (a leaf module with no modules.* imports), so
  the enhancer and face_swapper no longer import each other just to
  share a constant. _onnx_enhancer re-exports it; face_swapper now
  imports it at module top level instead of inside get_face_swapper().
- Narrow run.py's SystemExit handling: catch SystemExit separately
  and print a [startup] message so the failure is visible instead
  of being swallowed alongside ImportError/FileNotFoundError.

modules/platform_info.py

@@ -42,6 +42,14 @@ HAS_COREML_PROVIDER: bool = "CoreMLExecutionProvider" in ONNX_PROVIDERS
 HAS_DML_PROVIDER: bool = "DmlExecutionProvider" in ONNX_PROVIDERS
 HAS_OPENVINO_PROVIDER: bool = "OpenVINOExecutionProvider" in ONNX_PROVIDERS
 
+# OpenVINO execution-provider config shared by every ONNX session builder.
+# AUTO:GPU,NPU,CPU lets OpenVINO pick the best available device in priority
+# order (Intel GPU → NPU → CPU). 
+OPENVINO_PROVIDER_CONFIG = (
+    "OpenVINOExecutionProvider",
+    {"device_type": "AUTO:GPU,NPU,CPU"},
+)
+
 
 def camera_backends() -> List[Tuple[int, int]]:
     """Return an ordered list of ``(device_index, cv2_backend)`` attempts.