Embed VmLauncherApp into com.android.virt

Bug: 333495394
Test: build and then check if VmlauncherApp is included in virt apex
Change-Id: Iffa70df09c566182c33638748d29679307d71e9b
diff --git a/vmlauncher_app/Android.bp b/vmlauncher_app/Android.bp
index 06dcf7a..f9c325c 100644
--- a/vmlauncher_app/Android.bp
+++ b/vmlauncher_app/Android.bp
@@ -21,4 +21,7 @@
     ],
     platform_apis: true,
     privileged: true,
+    apex_available: [
+        "com.android.virt",
+    ],
 }