Add ability to open apps and browsers from TWA

**Is your feature request related to a problem? Please describe.**
Currently, all links open within TWA and `intent://` links don't work.

**Describe the solution you'd like**
Ability to through user outside TWA for all non-app related links. It would be awesome if there would be an option to let user select where they want to open a link, just like in a native app. Opening maps in a selected map application, social media link in an app I want, etc.

**Additional context**
It is possible to open links outside PWA from browsers and WebView. WebView even has a method `shouldOverrideUrlLoading` that lets developer decide how links should behave. CustomTabs doesn't seem to offer anything. An exception could be [execCommand](https://developer.android.com/reference/androidx/browser/customtabs/CustomTabsClient?hl=en#extraCommand(java.lang.String,%20android.os.Bundle)), but I am not an Android/Java developer, so don't understand what to do with it.

If there is at least some way to achieve this behaviour, please share it.