feature request: Preview code in right-hand nav window

[barries]

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Describe the feature

It would be lovely if the nav float could preview the code in it's right-hand window, à la snacks.nvim's popups.

This would allow the nav window to be used to explore unfamiliar code, and to quickly look up a symbol without altering the current editing window.

Provide background

No response

What is the significance of this feature?

nice to have

Additional details

No response