feat(major): move new telemetry architecture into new provider

llama_stack/core/telemetry/tracing.py

@@ -0,0 +1,20 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the terms described in the LICENSE file in
+# the root directory of this source tree.
+from abc import abstractmethod
+from fastapi import FastAPI
+from pydantic import BaseModel
+
+
+class TelemetryProvider(BaseModel):
+    """
+    TelemetryProvider standardizes how telemetry is provided to the application.
+    """
+    @abstractmethod
+    def fastapi_middleware(self, app: FastAPI, *args, **kwargs):
+        """
+        Injects FastAPI middleware that instruments the application for telemetry.
+        """
+        ...