Port examples to Marimo and add new section for n-dimensional expressions

[Transurgeon]

Recently, in #2606 , @aryamanjeendgar has introduced a marimo notebook for the new quantum information atoms. Using WebAssembly it is possible to run marimo notebooks entirely on the web, see here for more details. In addition, @phschiele has also added cvxpy to pyodide which makes it possible to have cvxpy examples in marimo notebooks entirely on the web!

It would be awesome to have an interactive page for the examples where the user would be able to run things directly instead of being redirected to a google colab link.

In addition, in the upcoming release we are starting to support n-dimensional expressions and it would be great to have concrete examples for its usage (ideas include power systems, networking, etc.).