Refactor genai (#22752)

* Switch to a feature-based roles so it is easier to choose models for different tasks

* Fallback and try llama-swap format

* List models supported by provider

* Cleanup

* Add frontend

* Improve model loading

* Make it possible to update genai without restarting

* Cleanup

* Cleanup

* Mypy

frigate/embeddings/maintainer.py

@@ -202,15 +202,13 @@ class EmbeddingMaintainer(threading.Thread):
         # post processors
         self.post_processors: list[PostProcessorApi] = []
 
-        if self.genai_manager.vision_client is not None and any(
-            c.review.genai.enabled_in_config for c in self.config.cameras.values()
-        ):
+        if any(c.review.genai.enabled_in_config for c in self.config.cameras.values()):
             self.post_processors.append(
                 ReviewDescriptionProcessor(
                     self.config,
                     self.requestor,
                     self.metrics,
-                    self.genai_manager.vision_client,
+                    self.genai_manager,
                 )
             )
 
@@ -248,16 +246,14 @@ class EmbeddingMaintainer(threading.Thread):
             )
             self.post_processors.append(semantic_trigger_processor)
 
-        if self.genai_manager.vision_client is not None and any(
-            c.objects.genai.enabled_in_config for c in self.config.cameras.values()
-        ):
+        if any(c.objects.genai.enabled_in_config for c in self.config.cameras.values()):
             self.post_processors.append(
                 ObjectDescriptionProcessor(
                     self.config,
                     self.embeddings,
                     self.requestor,
                     self.metrics,
-                    self.genai_manager.vision_client,
+                    self.genai_manager,
                     semantic_trigger_processor,
                 )
             )