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
diff --git a/cipd/system_images/android-30/google_atd/x86.yaml b/cipd/system_images/android-30/google_atd/x86.yaml
new file mode 100644
index 0000000..7d69d02
--- /dev/null
+++ b/cipd/system_images/android-30/google_atd/x86.yaml
@@ -0,0 +1,9 @@
+# Copyright 2023 The Chromium Authors
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+package: chromium/third_party/android_sdk/public/system-images/android-30/google_atd/x86
+description: system_images;android-30;google_atd;x86
+root: ../../../../public/
+data:
+  - dir: system-images/android-30/google_atd/x86
diff --git a/cipd/system_images/android-30/google_atd/x86_64.yaml b/cipd/system_images/android-30/google_atd/x86_64.yaml
new file mode 100644
index 0000000..8f3227a
--- /dev/null
+++ b/cipd/system_images/android-30/google_atd/x86_64.yaml
@@ -0,0 +1,9 @@
+# Copyright 2023 The Chromium Authors
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+package: chromium/third_party/android_sdk/public/system-images/android-30/google_atd/x86_64
+description: system_images;android-30;google_atd;x86_64
+root: ../../../../public/
+data:
+  - dir: system-images/android-30/google_atd/x86_64