Change order of headers in exported CSV file

[VasumathiJayakumar]

The order of headers for attributes in the exported attributes.csv file should be the same as the order of API response, when querying for Product types in API playground. This would avoid confusion when the header list is long and some comparison is done between the response and csv file. And also the localaizable Enum type attributes are not consecutively displayed.

[ValeSauer]

Does rearrangement of columns might affect https://github.com/sphereio/sphere-product-type-json-generator ?