Implementation of device utility methods

[AdamVe]

In this PR:

• added new SDK module , :support which will contain supportive methods
• added Device class with getName and readInfo helper methods.
• updated the Android DemoApp to use the new methods

Requirements:

The new methods should have same functionality as

1. https://github.com/Yubico/yubikey-manager/blob/next/ykman/device.py#L613
2. https://github.com/Yubico/yubikey-manager/blob/next/ykman/device.py#L518

Testing

No automated tests yet. All test are being done manually and the results are being compared to result outputs from existing Yubico apps (Yubikey Manager on Desktop)

[dainnilsson]

Can you add a package-info.java like this one: https://github.com/Yubico/yubikit-android/blob/master/oath/src/main/java/com/yubico/yubikit/oath/package-info.java to the package? This serves to make all variables non-nullable unless explicitly annotated as Nullable.