add claude code tracing (#1900)

https://langchain-5e9cc07a-preview-claude-1765849866-8a31c36.mintlify.app/

Author: tanushree-sharma

src/docs.json

@@ -936,6 +936,7 @@
                         "langsmith/trace-openai",
                         "langsmith/trace-with-autogen",
                         "langsmith/trace-claude-agent-sdk",
+                        "langsmith/trace-claude-code",
                         "langsmith/trace-with-crewai",
                         "langsmith/trace-with-google-adk",
                         "langsmith/trace-with-instructor",