This commit fixes issues with BottomTabs text color on iOS 13

* Extract bottomTab options from base presenter
* Add iOS 13 appearance support for bottomTabs and bottomTab

* Apply layout.backgroundColor on parent view controllers

* Add layout.componentBackgroundColor

* Remove drawBehind deprecation

* Set  as default modalPresentationStyle

* Sets the system default modalPresentationStyle

* Fix tests

* Fix unit tests

* Fix unit tests

* Add modal.swipeToDismiss option

* Support centered bottomTab icons using bottomTabs.titleDisplayMode option

* Improve readability, better namings

* Rename setTabItemImagesCentered to centerTabItems

Break all the PRs :(

iOS and Android code base used different naming conventions - this commit aims to unify naming conventions. I probably missed a few properties here and there so this will be an ongoing effort.