Implemented reading from struct fields

src/types/Struct.go

@@ -14,3 +14,13 @@ func (s *Struct) UniqueName() string {
 func (s *Struct) TotalSize() uint8 {
 	return s.Size
 }
+
+func (s *Struct) FieldByName(name string) *Field {
+	for _, field := range s.Fields {
+		if field.Name == name {
+			return field
+		}
+	}
+
+	return nil
+}