TPI: [Scenario 2] Run through mono repo setup guidance

[luabud]

Refs: #21969

• anyOS @ulugbekna
• anyOS @karthiknadig

Complexity: 5

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#21969 (comment) has a draft/proposal of a wiki page we'd create and add to the Python extension repo. This TPI is to make sure the instructions in Scenario 1 are clear and the guidance makes sense and works. Feedback on wording, structure, etc. is all very welcome!

1. Read through the Scenario 2: Separate Virtual Environments section in Write a wiki page for monorepo setups #21969 (comment)
2. Clone the Responsible AI Toolbox repo, or any other Python mono repo of your choice. The key thing is that the projects within that mono repo should have conflicting dependencies between each other.
3. Follow the Set up steps instructions for the Scenario 2: Separate Virtual Environments section
   • Open a multi-root workspace with all of these folders as their own root: raiutils, raiwidgets, erroranalysis, responsibleai, rai_core_flask, rai_test_utils, nlp_feature_extractors
   • You don't need to create a environment for each one of them. Just pick two and that should be enough!
   • If you can also test out the instructions for adding the mono repo root folder (i.e. responsible-ai-toolbox) to the mult-root workspace and adding the files.exclude setting in its workspace settings so the other folders that are opened as their own workspaces don't show up in the file explorer (i.e. step 13), that would be great!