[TreeView] Return instance and publicAPI methods from plugin and populate the main objects inside useTreeView

[flaviendelangle]

This is a proposal for a DX change on the plugin API.
Right now, we are populating the instance and publicAPI objects inside each plugin using the populateInstance and populatePublicAPI methods.
This PR proposes to instead have the plugin returning them and useTreeView do the population.

Advantages

• More consistent with the contextValue which is returned by each plugin
• Allows to have a type error when a plugin forgets to populate its instance or publicAPI
• Plugin that never consume the instance no longer need to access this parameter
• The publicAPI parameter can be totally removed from the plugin parameters

[mui-bot]

Deploy preview: https://deploy-preview-12650--material-ui-x.netlify.app/

Updated pages:

• docs/data/tree-view/rich-tree-view/headless/headless.md

Generated by 🚫 dangerJS against 1b9b83d

[github-actions]

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[noraleonte]

Very interesting change 👏 It makes total sense!