[service-vm] Start a bare-metal service VM from a client app

This cl mainly sets up the general pipeline to trigger the
bare-metal VM from a client app. The real implementation of the
API will be adjusted in the future.

Test: Runs the RkpvmClientApp in VM
Bug: 241428822
Change-Id: I92cef7033db9a2d8cf4ad1fec22fee8c93b1cef6
diff --git a/apex/Android.bp b/apex/Android.bp
index e39b459..1c4d357 100644
--- a/apex/Android.bp
+++ b/apex/Android.bp
@@ -92,6 +92,8 @@
         "microdroid_initrd_normal",
         "microdroid.json",
         "microdroid_kernel",
+        // rialto_bin is a prebuilt target wrapping the signed bare-metal service VM.
+        "rialto_bin",
     ],
     host_required: [
         "vm_shell",