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

No change was necessary, it was already properly split.
diff --git a/src/hpack-dec.c b/src/hpack-dec.c
index 50293d8..aa73f9b 100644
--- a/src/hpack-dec.c
+++ b/src/hpack-dec.c
@@ -34,7 +34,7 @@
 #include <common/hpack-dec.h>
 #include <common/hpack-huff.h>
 #include <common/hpack-tbl.h>
-#include <common/chunk.h>
+#include <haproxy/chunk.h>
 #include <common/h2.h>
 #include <import/ist.h>