Support locale and font validation for Android

There are at least four questions that would be useful to have a library solution to solve for the Android ecosystem:

1. Does this device support Unicode for Myanmar script? What about Zawgyi?
2. In case of devices with both Unicode and Zawgyi support, are we running in a Zawgyi locale or a Unicode locale?
3. Should the UI language be in Burmese or English?
4. Is the locale's country an alias for Myanmar?

@mihnita says that any implementation of these features would need to be Android-specific and would probably not work outside of an Android environment. Therefore, this could be implemented by a sub-library within Myanmar Tools, distributed under its own artefact ID.

Ideas for APIs that such a library could provide:

```java
public enum BurmeseFontEncoding {
UNICODE,
ZAWGYI
};

/**
* Returns the default font encoding used to render Burmese text on this device.
*/
public BurmeseFontEncoding getDefaultBurmeseFontEncoding() {}

/**
* Returns an ordered list of fonts available on the system that have Burmese-range
* code points, in the order of priority.
*/
public List getAvailableBurmeseFonts() {}
```

The implementation of this library would need to be based on heuristics from the Android ecosystem.