* Add dialog component
* Fix: fix back button not functioning right
* Fix: fix action btns get added to the scrollview
* Fix: match the MD guidelines for margins
* Visual enhancements to the dialog example scene
* Fix: fix flow errors
* 🎨 Fix prettier errors
* Enhancements to the dialog component
* More enhancements to the dialog component
* 🎉 Introduce Modal component and refactor Dialog to use it
* Remove ThemedPortal from exported components
* 🐛 Fix shadow cutoff on Android
* Add a comment about a regression that is caused by a fix that was done for Android
* chore: Seperate example dialog components into their own files
* chore: Rename Dialog components to be prefixed with 'Dialog'
* chore: change DialogTitle color prop to style
* chore: Replace AnimatedPaper to Paper.Animated
* fix: Replace BackAndroid with BackHandler
* chore: Merge master with `dialog`
* chore: Addressed comments