fix: remove d2

[edoardo]

Implements DHIS2-XXXX

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Key features

1. prepare to get rid of d2 entirely

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Description

This branch has changes to remove the need for d2.
There is still one place where d2 is needed and we don't have an alternative at the moment, the user data store.

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TODO

• figure out how to use the user data store without d2
• lots of regression testing
• fix tests, particularly the App.js tests, but before touching them we should figure out how we want to test, what should
  be tested in Cypress and what in unit tests
• look for and clean up more code not needed
• see if it's possible to avoid fetching all user authorities to check for the ALL, do we really need the isSuperuser flag?
• fix DimensionsPanel.spec.js: figure out how to mock the cachedDataQuery / provider (tests are skipped)

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Known issues

• the user data store is used to store the visualization object when switching visualization from DV to Maps. Currently it relies on d2 as it's using some classes defined in that package.
• now that with this PR DV uses the app service data for getting/setting the current AO in the user data store, Maps should be updated in order to read the AO from the same key, since the app service stores the key under settings. Fixed here.

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Screenshots

Not very meaningful but this is the app running on this branch:

[dhis2-bot]

🚀 Deployed on https://pr-3023--dhis2-data-visualizer.netlify.app