Add API Reference and llms.txt (#256)

* stream api reference

* docs

* Add code

* Add code

* code

.github/workflows/docs.yml

@@ -32,7 +32,7 @@ jobs:
           path: .cache
           restore-keys: |
             mkdocs-material-
-      - run: pip install mkdocs-material
+      - run: pip install mkdocs-material mkdocs-llmstxt
       - name: Build docs
         run: mkdocs build