refactor structure

docs/source/api_providers/index.md

@@ -0,0 +1,13 @@
+# API Providers
+
+A Provider is what makes the API real -- they provide the actual implementation backing the API.
+
+As an example, for Inference, we could have the implementation be backed by open source libraries like `[ torch | vLLM | TensorRT ]` as possible options.
+
+A provider can also be just a pointer to a remote REST service -- for example, cloud providers or dedicated inference providers could serve these APIs.
+
+```{toctree}
+:maxdepth: 2
+
+new_api_provider
+```