AOSP/DeskClock - Add Kotlin file for UiDataModel

Test: manual - Tested the DeskClock UI. As well, unit tests were run as
follows

$ source build/envsetup.sh
$ lunch aosp_sargo-userdebug
$ make DeskClockKotlin
$ adb install out/target/product/sargo/product/app/DeskClockKotlin/DeskClockKotlin.apk
$ make DeskClockTests
$ adb install out/target/product/sargo/testcases/DeskClockTests/arm64/DeskClockTests.apk
$ adb shell am instrument -w com.android.deskclock.tests

BUG: 157255731
Change-Id: Ia04eb18c29f75f29a1a05148f2c4390338c9c8fe
12 files changed