move common util fcts to /common to avoid common files (e.g. crc) to depend on non-common files

client/emv/emvjson.h

@@ -12,6 +12,7 @@
 
 #include <jansson.h>
 #include "tlv.h"
+#include "commonutil.h"
 
 typedef struct {
     tlv_tag_t Tag;