Add google_atd system images at API 30 to android-sdk-packager.

Per https://developer.android.com/studio/test/gradle-managed-devices#gmd-atd,
ATD images improve runtime performance in a few ways:
 * Remove pre-installed apps that are typically not useful for testing
 * Disable certain background services that are typically not useful
   for testing
 * Disable hardware rendering (setprop debug.hwui.drawing_enabled 0)

Bug: 1481246, 1465054
Change-Id: I0b1b210908d47c79a319be993e4ebd8d040ca5aa
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4857247
Reviewed-by: James Shen <zhiyuans@google.com>
Reviewed-by: Yaron Friedman <yfriedman@chromium.org>
Commit-Queue: Haiyang Pan <hypan@google.com>
Cr-Commit-Position: refs/heads/main@{#1195456}
NOKEYCHECK=True
GitOrigin-RevId: 2296c6bf8489055bf46fa05f884d5035b457faf1