AOSP/DeskClock - Add Kotlin file for AlarmStateManager

Test: manual - Ran the following on Sargo phone. Tested all alarm
interactions on the alarms list, alarms ringing, snoozing, dismissing.

$ source build/envsetup.sh
$ lunch aosp_sargo-userdebug
$ make DeskClockKotlin -j
$ adb install out/target/product/sargo/product/app/DeskClockKotlin/DeskClockKotlin.apk

BUG: 157255731
Change-Id: Iba74dd8e5c93a85ef440dec8b9ab6b06bec8cb1f
5 files changed