might want to tweak the hide show values later

This commit contains various fixes and enhancements, mostly because I
was too lazy to commit small changes.

* Add topBarCollapseOnScroll style property which compliments
  navBarHideOnScroll. This property is needed when showing a
  collapsing topTabs screen. In this case the developer might to keep
  the titleBar bar when the screen is collapsed.
* Reduce collapse sensitivity by taking scaled touch slop into account
* Cancel touches when collapsing. This fix prevents buttons from
  responding to touch events when collapse ends.

Add expendOnTopTabChange style property which defaults to true. Setting it to false

consider changing this later on

* update .gitignore added #VSCODE section

* added # VSCODE

* Add showInAppNotification autoDismissTimerSec param

* Default autoDismissTimerSec of notification to 5, like on iOS

* Add param to disable notification auto-dismiss behaviour.

* Update showInAppNotification example with optional params

* Add .hideInAppNotification on android.

- Separate hide and show animations.
- Implement a little bit of throttling around successive calls to .showInAppNotification

* Update example to demo dismiss.

This commit adds support for icons in TopTabs.
It’s possible to have icons with text, or only icons.
Use topTabIconColor and selectedTopTabIconColor to color the icons

* Don’t create SideMenu button automatically on Android

* Remove left button and add it dynamically

* Fix resetTo animation on Android

Up until now resetTo would destroy the current stack and create a new
one. This was an easy implementation but resulted in jurky
(none existent) animations.
This commit changes resetTo behavior. Instead of recreating the stack,
the we reset to is pushed to the stack, and the other elements are
removed when show animation ends.

* Fix bug in popToRoot when keyboard is visible

* Add comments

* code review changes

* Add final to function parameters

* WIP

* Core function works e2e

* Queued overlays support

* Remove unneeded activity ref

* Add post-PR changes

This reverts commit c2ef2608c1.

As discussed on #644

This reverts commit 72fbe247bd.