Openvino models (#14283)

* Enable model conversion cache for openvino

* Use openvino directly for onnx embeddings if available

* Don't fail if zmq is busy

frigate/detectors/plugins/openvino.py

@@ -3,6 +3,7 @@ import os
 
 import numpy as np
 import openvino as ov
+import openvino.properties as props
 from pydantic import Field
 from typing_extensions import Literal
 
@@ -34,6 +35,8 @@ class OvDetector(DetectionApi):
             logger.error(f"OpenVino model file {detector_config.model.path} not found.")
             raise FileNotFoundError
 
+        os.makedirs("/config/model_cache/openvino", exist_ok=True)
+        self.ov_core.set_property({props.cache_dir: "/config/model_cache/openvino"})
         self.interpreter = self.ov_core.compile_model(
             model=detector_config.model.path, device_name=detector_config.device
         )