selinux: Add missing seapp_contexts file

Change-Id: I6bda9e4876b9053ea16fe3c11c21b9c1e7acb17a
diff --git a/sepolicy/seapp_contexts b/sepolicy/seapp_contexts
new file mode 100644
index 0000000..f39256a
--- /dev/null
+++ b/sepolicy/seapp_contexts
@@ -0,0 +1 @@
+user=theme_man domain=system_app type=system_data_file