REORG: include: move common/chunk.h to haproxy/chunk.h

No change was necessary, it was already properly split.
diff --git a/src/standard.c b/src/standard.c
index fe174af..2b32429 100644
--- a/src/standard.c
+++ b/src/standard.c
@@ -37,7 +37,7 @@
 #include <arpa/inet.h>
 
 #include <haproxy/api.h>
-#include <common/chunk.h>
+#include <haproxy/chunk.h>
 #include <common/standard.h>
 #include <types/global.h>
 #include <proto/applet.h>