guest: debian: Implement storage_balloon_agent

Add storage_balloon_agent daemon in Debian and its client in
the TerminalApp for enabling storage ballooning.
This feature is hidden behind a feature flag 'terminalStorageBalloon'.

Since we still use non-sparse disks, the balloon shouldn't affect
the guest's disk space yet.

Bug: 382174138
Test: Run a VM and check logs

Change-Id: I75d926bb8aa8a02bf635e94e35715e5aa23c8090
diff --git a/android/TerminalApp/Android.bp b/android/TerminalApp/Android.bp
index 2bac412..e1e236a 100644
--- a/android/TerminalApp/Android.bp
+++ b/android/TerminalApp/Android.bp
@@ -15,6 +15,7 @@
         "android.system.virtualizationservice_internal-java",
         "androidx-constraintlayout_constraintlayout",
         "androidx.window_window",
+        "androidx.work_work-runtime",
         "apache-commons-compress",
         "avf_aconfig_flags_java",
         "com.google.android.material_material",