[librsvg] Add doc/rsvg.types so the object hierarchy gets generated

[Federico Mena Quintero <federico src gnome org>]

commit be01a54b04475bb42331f73197c596198f3c0b81
Author: Federico Mena Quintero <federico gnome org>
Date:   Fri Aug 2 16:00:49 2019 -0500

    Add doc/rsvg.types so the object hierarchy gets generated

 doc/rsvg.types | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/doc/rsvg.types b/doc/rsvg.types
new file mode 100644
index 00000000..298f4d33
--- /dev/null
+++ b/doc/rsvg.types
@@ -0,0 +1,3 @@
+#include <librsvg/rsvg.h>
+
+rsvg_handle_get_type