YOLOv5 & YOLOv8 support for the OpenVINO Detector (#5523)

* Initial commit that adds YOLOv5 and YOLOv8 support for OpenVINO detector

* Fixed double inference bug with YOLOv5 and YOLOv8

* Modified documentation to mention YOLOv5 and YOLOv8

* Changes to pass lint checks

* Change minimum threshold to improve model performance

* Fix link

* Clean up YOLO post-processing

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Co-authored-by: Nicolas Mowen <nickmowen213@gmail.com>

frigate/detectors/detector_config.py

@@ -26,6 +26,8 @@ class InputTensorEnum(str, Enum):
 class ModelTypeEnum(str, Enum):
     ssd = "ssd"
     yolox = "yolox"
+    yolov5 = "yolov5"
+    yolov8 = "yolov8"
 
 
 class ModelConfig(BaseModel):