* Split minimal shell mode into headerMode and footerMode
For now, we'll always write them in sync. When we read them, we'll use headerMode as source of truth. This will let us keep footerMode independent in a future commit.
* Remove fixed_bottom_bar special cases during calculation
This isn't the right time to determine special behavior. Instead we'll adjust footerMode itself conditionally on the gate.
* Copy-paste setMode into MainScrollProvider
This lets us fork the implementation later just for this case.
* Gate footer adjustment in MainScrollProvider
This is the final piece. Normal calls to setMode() keep setting both header and footer, but MainScrollProvider adjusts the footer conditionally.
* Disable existing code that toggles shell
* Make shell mode a float
* Translate based on the gesture
* Track header and footer heights
* Add web support
* Fix types and cleanup
* Add back isScrolled logic
* Add comments
* WIP
* Add shell state
* Integrate new shell state for drawer and minimal shell mode
* Replace isDrawerSwipeDisabled
* Split shell state into separate contexts to avoid needless re-renders
* Fix typo
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Co-authored-by: Paul Frazee <pfrazee@gmail.com>
