More debug output

Signed-off-by: Sebastian Ramacher <sebastian+dev@ramacher.at>

zathura/file-monitor.c

@@ -147,6 +147,7 @@ zathura_filemonitor_new(const char*                file_path,
     return NULL;
   }
 
+  girara_debug("starting file monitor");
   ZathuraFileMonitor* file_monitor = ZATHURA_FILEMONITOR(ret);
   ZATHURA_FILEMONITOR_GET_CLASS(file_monitor)->start(file_monitor);