WIP field hashing

src_features/signMessageEIP712/field_hash.c

@@ -0,0 +1,14 @@
+#include <stdlib.h>
+#include "field_hash.h"
+#include "encode_field.h"
+
+const uint8_t *field_hash(const void *const structs_array,
+                          const uint8_t *const data,
+                          const uint8_t data_length)
+{
+    (void)structs_array;
+    (void)data;
+    (void)data_length;
+    encode_integer(data, data_length);
+    return NULL;
+}