Implement Reverse function for bytes slice

The function can be used to reverse the bytes order in the slice.

Author: nkuba

pkg/internal/byteutils/byteutils.go

@@ -22,3 +22,12 @@ func LeftPadTo32Bytes(bytes []byte) ([]byte, error) {
 
 	return result, nil
 }
+
+// Reverse reverses bytes order in the slice.
+func Reverse(bytes []byte) []byte {
+	result := make([]byte, 0, len(bytes))
+	for i := len(bytes) - 1; i >= 0; i-- {
+		result = append(result, bytes[i])
+	}
+	return result
+}