Add implementations for IsolatedCompilation*

Implement our SystemService and JobService, to initially run
compilation once a day when idle & charging.

Test: adb shell cmd jobscheduler run -f android 5132250
Bug: 199147668
Change-Id: I256a6cc75e15558bcfd4a56cd1d5ef511c209622
diff --git a/compos/service/Android.bp b/compos/service/Android.bp
index 142460e..6270c9a 100644
--- a/compos/service/Android.bp
+++ b/compos/service/Android.bp
@@ -29,7 +29,9 @@
     apex_available: [
         "com.android.compos",
     ],
-    // Access to SystemService etc
-    sdk_version: "system_server_current",
+    // Access to SystemService, ServiceManager#waitForService etc
+    libs: ["services"],
+    sdk_version: "",
+    platform_apis: true,
     installable: true,
 }