Processing refactor (#15935)

* Refactor post processor to be real time processor

* Build out generic API for post processing

* Cleanup

* Fix

frigate/data_processing/post/api.py

@@ -0,0 +1,43 @@
+"""Local or remote processors to handle post processing."""
+
+import logging
+from abc import ABC, abstractmethod
+
+from frigate.config import FrigateConfig
+
+from ..types import DataProcessorMetrics, PostProcessDataEnum
+
+logger = logging.getLogger(__name__)
+
+
+class PostProcessorApi(ABC):
+    @abstractmethod
+    def __init__(self, config: FrigateConfig, metrics: DataProcessorMetrics) -> None:
+        self.config = config
+        self.metrics = metrics
+        pass
+
+    @abstractmethod
+    def process_data(
+        self, data: dict[str, any], data_type: PostProcessDataEnum
+    ) -> None:
+        """Processes the data of data type.
+        Args:
+            data (dict): containing data about the input.
+            data_type (enum): Describing the data that is being processed.
+
+        Returns:
+            None.
+        """
+        pass
+
+    @abstractmethod
+    def handle_request(self, request_data: dict[str, any]) -> dict[str, any] | None:
+        """Handle metadata requests.
+        Args:
+            request_data (dict): containing data about requested change to process.
+
+        Returns:
+            None if request was not handled, otherwise return response.
+        """
+        pass