Start versioning the WASI NN package (WebAssembly#72)

* add pkg version 0.2.0-rc-2024-06-25 to start wit pkg versioning

* Update `ml.md` with `wit-bindgen`

* Update `wit-abi-up-to-date` CI tool

* Apply tweaks from `[email protected]`

---------

Signed-off-by: David Justice <[email protected]>
Co-authored-by: Andrew Brown <[email protected]>

Author: devigned

.github/workflows/main.yml

@@ -11,4 +11,4 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - uses: WebAssembly/wit-abi-up-to-date@v16
+    - uses: WebAssembly/wit-abi-up-to-date@v21