feat: Add instrumentation for Microsoft agent framework

https://github.com/microsoft/agent-framework

Start with the Microsoft Agent Framework repository linked in the issue, then inspect loongsuite-python's existing instrumentation integrations and tests for the nearest comparable framework. Identify the relevant entry points and test locations before defining the supported coverage; done means the integration is exercised by tests against the framework's instrumented behavior.

Written by the indexing model from the issue text.