stamp: starting with ai docs

- to rebase later

Author: kallebysantos

ext/ai/README.md

@@ -0,0 +1,25 @@
+# Supabase AI module
+
+This crate is part of the Supabase Edge Runtime stack and implements AI related
+features for the `Supabase.ai` namespace.
+
+## Model Execution Engine
+
+`Supabase.ai` uses [onnxruntime](https://onnxruntime.ai/) as internal model
+execution engine, backend by [ort pyke](https://ort.pyke.io/) rust bindings.
+
+TODO: add photo
+
+Following there's specific documentation for both "lands":
+
+<details>
+  <summary>Javascript/Frontend</summary>
+</details>
+
+<details>
+  <summary>Rust/Backend</summary>
+</details>
+
+onnxruntime:
+
+the Session class: