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

No change was necessary, it was already properly split.
diff --git a/include/common/standard.h b/include/common/standard.h
index 7a2ba2e..d2231d8 100644
--- a/include/common/standard.h
+++ b/include/common/standard.h
@@ -39,7 +39,7 @@
 #include <arpa/inet.h>
 #include <haproxy/api.h>
 #include <haproxy/intops.h>
-#include <common/chunk.h>
+#include <haproxy/chunk.h>
 #include <common/namespace.h>
 #include <import/eb32tree.h>
 #include <import/eb32sctree.h>