Split out ServiceList and ServiceParser from service.cpp/.h

These always should have been in their own files.

Test: build
Change-Id: I201109b5ee63016e78901bbfd404846d45e1d4e6
diff --git a/init/init.h b/init/init.h
index 90ead0e..198ec2a 100644
--- a/init/init.h
+++ b/init/init.h
@@ -26,7 +26,7 @@
 #include "action.h"
 #include "action_manager.h"
 #include "parser.h"
-#include "service.h"
+#include "service_list.h"
 
 namespace android {
 namespace init {