Add GenAI Backend Streaming and Chat (#22152)

* Add basic chat page with entry

* Add chat history

* processing

* Add markdown

* Improvements

* Adjust timing format

* Reduce fields in response

* More time parsing improvements

* Show tool calls separately from message

* Add title

* Improve UI handling

* Support streaming

* Full streaming support

* Fix tool calling

* Add copy button

* Improvements to UI

* Improve default behavior

* Implement message editing

* Add sub label to event tool filtering

* Cleanup

* Cleanup UI and prompt

* Cleanup UI bubbles

* Fix loading

* Add support for markdown tables

* Add thumbnail images to object results

* Add a starting state for chat

* Clenaup

frigate/api/defs/request/chat_body.py

@@ -39,3 +39,7 @@ class ChatCompletionRequest(BaseModel):
             "user message as multimodal content. Use with get_live_context for detection info."
         ),
     )
+    stream: bool = Field(
+        default=False,
+        description="If true, stream the final assistant response in the body as newline-delimited JSON.",
+    )