REORG: include: move proto_udp.h to haproxy/proto_udp{,-t}.h

No change was needed.
diff --git a/src/proto_udp.c b/src/proto_udp.c
index a1d9176..93c0389 100644
--- a/src/proto_udp.c
+++ b/src/proto_udp.c
@@ -12,7 +12,7 @@
 
 #include <types/global.h>
 #include <haproxy/fd-t.h>
-#include <types/proto_udp.h>
+#include <haproxy/proto_udp-t.h>
 
 #include <haproxy/fd.h>