Add the skeleton code for People Service which is a new system service with only internal APIs

Change-Id: I78b1b362735d5da40c49a344ae3063ea0df0759f
Bug: 146522621
Test: Code builds and runs successfully
diff --git a/services/Android.bp b/services/Android.bp
index ede4c3e..1e11936 100644
--- a/services/Android.bp
+++ b/services/Android.bp
@@ -61,6 +61,7 @@
         "services.devicepolicy",
         "services.midi",
         "services.net",
+        "services.people",
         "services.print",
         "services.restrictions",
         "services.startop",