* move history providers into a separate crate
* start moving route providers into the renderers
* clean up intoroutable
* remove into routable
* fix router tests
* Provide history providers in each renderer
* implement nested routers
* move the lens out of the history crate
* re-export dioxus history trait in the prelude
* also re-export the history function
* fix history doctests
* some light cleanups
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Co-authored-by: Jonathan Kelley <jkelleyrtp@gmail.com>
