🎉 Binder support

[fbordeu]

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[fbordeu]

[fbordeu]

link to test
https://mybinder.org/v2/gh/PLAID-lib/plaid/BinderSupport?urlpath=%2Fdoc%2Ftree%2Fexamples%2Fproblem_definition_example.py

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[fbordeu]

This is working as intended,
The only problem is the limited capacity of the binder instance. no suitable for downloading hf dataset, so finally really limited for the exploration of the library.

you can try it here:
https://mybinder.org/v2/gh/PLAID-lib/plaid/BinderSupport?urlpath=%2Fdoc%2Ftree%2Fexamples%2Fproblem_definition_example.py

if ok, I can merge it to ProtoV1.