Now handles domain & message struct not based on order but on struct name

src_features/signMessageEIP712/eip712.h

@@ -64,6 +64,9 @@ typedef enum
 
 #define ARRAY_SIZE(a)   (sizeof(a) / sizeof(a[0]))
 
+#define DOMAIN_STRUCT_NAME          "EIP712Domain"
+#define DOMAIN_STRUCT_NAME_LENGTH   12
+
 // TODO: Move these into a new file
 const char *get_struct_name(const uint8_t *ptr, uint8_t *const length);
 const uint8_t *get_struct_fields_array(const uint8_t *ptr,