REORG: cli: split dumpstats.c in src/cli.c and src/stats.c

dumpstats.c was containing either the stats code and the CLI code.
The cli code has been moved to cli.c and the stats code to stats.c
diff --git a/include/proto/dumpstats.h b/include/proto/dumpstats.h
index 12f972c..6e0adfa 100644
--- a/include/proto/dumpstats.h
+++ b/include/proto/dumpstats.h
@@ -513,6 +513,8 @@
 };
 
 
+int stats_dump_stat_to_buffer(struct stream_interface *si, struct uri_auth *uri);
+
 #endif /* _PROTO_DUMPSTATS_H */
 
 /*