Add OpenVino Detector (#3768)

* Initial work for adding OpenVino detector.  Not functional

* Load model and submit for inference.

Sucessfully load model and initialize OpenVino engine with either CPU or GPU as device.
Does not parse results for objects.

* Detection working with ssdlite_mobilenetv2 FP16 model

* Add OpenVIno support and model to docker image

* Add documentation for OpenVino detector configuration

* Adds support for ARM32/ARM64 and the Myriad X hardware

-  Use custom-built openvino wheel for all platforms
-  Add libusb build without udev for NCS2 support

* Add documentation around Intel CPU requirements and NCS2 setup

* Print all available output tensors

* Update documentation for config parameters

frigate/object_detection.py

@@ -12,6 +12,7 @@ from setproctitle import setproctitle
 
 from frigate.config import DetectorTypeEnum, InputTensorEnum
 from frigate.detectors.edgetpu_tfl import EdgeTpuTfl
+from frigate.detectors.openvino import OvDetector
 from frigate.detectors.cpu_tfl import CpuTfl
 
 from frigate.util import EventsPerSecond, SharedMemoryFrameManager, listen, load_labels
@@ -57,6 +58,10 @@ class LocalObjectDetector(ObjectDetector):
             self.detect_api = EdgeTpuTfl(
                 det_device=det_device, model_config=model_config
             )
+        elif det_type == DetectorTypeEnum.openvino:
+            self.detect_api = OvDetector(
+                det_device=det_device, model_config=model_config
+            )
         else:
             logger.warning(
                 "CPU detectors are not recommended and should only be used for testing or for trial purposes."