Provide an API to read launch parameters

### Problem description

There are various ways to launch an app other than opening it through the app launcher, e.g.:

* tapping on a notification
* calling custom URLs
* NFC

Provide an API to read launch parameters for common ways to launch an app.

After this feature has been implemented, following related APIs should be deprecated:
* The plugin [`tabris-plugin-launchmonitor`](https://github.com/eclipsesource/tabris-plugin-launchmonitor/)
* [`firebase.Messaging.launchData`](https://github.com/eclipsesource/tabris-plugin-firebase/blob/master/doc/cloud-messaging.md#launchdata--object)

### Environment

- Tabris.js version: 3.4.0
- OS: Android, iOS