Extract runVmTestService into MicrodroidDeviceTestBase

This is a helpful method to build tests around. Extract it into the base
class so it can also be used in benchmarks.

Test: atest MicrodroidTestApp
Change-Id: I0a055d1f5c423e42fbf447812a06776bae76a966
diff --git a/tests/helper/Android.bp b/tests/helper/Android.bp
index 61c5dcd..c9eafad 100644
--- a/tests/helper/Android.bp
+++ b/tests/helper/Android.bp
@@ -15,6 +15,7 @@
     static_libs: [
         "androidx.test.runner",
         "androidx.test.ext.junit",
+        "com.android.microdroid.testservice-java",
         "MicrodroidTestHelper",
         "truth-prebuilt",
     ],