DOC: Add interactive examples with jupyterlite-sphinx

[MatthewSZhang]

Add interactive examples similar to numpy/numpy#25969

[MatthewSZhang]

As fastcan is out-of-tree Pyodide build, we cannot use Pyodide kernel in JupyterLite directly.
To pre-install wasm wheel in the kernel, jupyterlite-sphinx docs recommends to use xeus-python kernel.
To use xeus kernel, we need to upload fastcan wasm wheel to emscripten-forge channel. See emscripten-forge/recipes#2973