service_files: Add a simple service file

Tested: Verified that the @BINDIR@ is correctly overwritten

Signed-off-by: Brandon Kim <brandonkim@google.com>
Change-Id: I89feb7a133b3cabd75f8de7ee2b0c86d8003e8a4
diff --git a/meson.build b/meson.build
index ce64c4b..2366091 100644
--- a/meson.build
+++ b/meson.build
@@ -10,3 +10,6 @@
   ])
 
 subdir('src')
+
+# installation of systemd service files
+subdir('service_files')