rtvi: separate specific google RTVI into a GoogleRTVIObserver

CHANGELOG.md

@@ -5,10 +5,19 @@ All notable changes to **Pipecat** will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Changed
+
+- `RTVIObserver` doesn't handle `LLMSearchResponseFrame` frames anymore. For
+  now, to handle those frames you need to create a `GoogleRTVIObserver` instead.
+
 ## [0.0.56] - 2025-02-06
 
 ### Changed
 
+- Use `gemini-2.0-flash-001` as the default model for `GoogleLLMSerivce`.
+
 - Improved foundational examples 22b, 22c, and 22d to support function calling.
   With these base examples, `FunctionCallInProgressFrame` and
   `FunctionCallResultFrame` will no longer be blocked by the gates.
@@ -33,10 +42,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   and should be set manually from the serializer constructor if a different
   value is needed.
 
-### Changed
-
-- Use `gemini-2.0-flash-001` as the default model for `GoogleLLMSerivce`.
-
 ### Other
 
 - Added a new `sentry-metrics` example.
@@ -119,7 +124,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - `AudioBufferProcessor.reset_audio_buffers()` has been removed, use
   `AudioBufferProcessor.start_recording()` and
-  ``AudioBufferProcessor.stop_recording()` instead.
+  `AudioBufferProcessor.stop_recording()` instead.
 
 ### Fixed