[TIMOB-27890] Android: Add Intl.DateTimeFormat support

*Summary:* On Android, we should add support for JavaScript class Intl.DateTimeFormat. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat/DateTimeFormat This is already supported on iOS. We should add it to Android for parity. *Note:* To add official Intl support to V8, we would have to #if it in, but this involves adding the ICU (International Components for Unicode) C++ library which is about 20 MB per architecture. This is too big and is not mobile friendly. Especially since Google Play has a 100 MB limit on APKs. So, the most reasonable solution is to implement this ourselves in Java. *Alternatives:* On older Titanium versions, your only option to generate localized date/time strings was via APIs: * [String.formatDate()](https://docs.appcelerator.com/platform/latest/#!/api/Global.String-method-formatDate) * [String.formatTime()](https://docs.appcelerator.com/platform/latest/#!/api/Global.String-method-formatTime)