Add basic test that shares a VM from one app to another

This test consist of 2 apps:
* MicrodroidTestApp - test driver
* MicrodroidVmShareApp - helper app that exposes a service that
  MicrodroidTestApp binds to.

The test orchestarted by MicrodroidTestApp consists of the following:

1. MicrodroidTestApp starts & stops a VM
2. MicrodroidTestApp creates a descriptor of that VM
3. MicrodroidTestApp binds to service in MicrodroidVmShareApp
4. MicrodroidTestApp sends the descriptor to MicrodroidVmShareApp
5. MicrodroidVmShareApp starts a VM from that descriptor, and connects
   to the vsock service exposed by the VM.
6. MicrodroidVmShareApp shares a binder interface for MicrodroidTestApp
   to interact with the service exposed by the MicrodroidVmShareApp VM.
7. MicrodroidTestApp uses that binder to assert on the VM.

This change adds the scaffolding and a basic test, more involved test
(e.g. with trusted storage) will be added in the follow up changes.

Bug: 259384440
Test: atest MicrodroidTestApp
Change-Id: I924c0fd9494010fd55fd9062206e8f3202e43b5b
diff --git a/tests/vmshareapp/AndroidManifest.xml b/tests/vmshareapp/AndroidManifest.xml
index eed3364..b623f7f 100644
--- a/tests/vmshareapp/AndroidManifest.xml
+++ b/tests/vmshareapp/AndroidManifest.xml
@@ -20,5 +20,13 @@
     <uses-feature android:name="android.software.virtualization_framework"
                   android:required="false" />
 
-    <application />
+    <application>
+        <service android:name="com.android.microdroid.test.sharevm.VmShareServiceImpl"
+                 android:exported="true">
+            <intent-filter>
+                <action android:name="com.android.microdroid.test.sharevm.VmShareService"/>
+            </intent-filter>
+        </service>
+    </application>
+
 </manifest>