Extensions can plug in to the app installation flow in 'Machine Configuration' to suggest packages for users

[joadoumie]

Suggested new feature or improvement

Extensions can interact with the app installation flow to help guide users to packages they may want to add while configuring their machine.

Scenario

Here is a rough outline of the expected flow:

1. A user installs a Dev Home extension
2. A user navigates to the App Installation flow within 'Machine Configuration'
3. The user can see any relevant section (e.g. 'Gaming Development') that the extension would like to plug into and packages that are being populated by the extension
4. User can add packages to their cart.

Additional details

Extension should be able to plug-in to existing sections of the app-installation flow if they exist ('Game Development', 'Data Science Tools', etc.).

We may need to maintain a list in the project of valid sections and expand the list based on community feedback and what would enable users to discover packages in a better way.