Document native import/export workflows

[divyenduz]

For all the data sources we support. As we don't have a feature to do export/import.

[chrisdrackett]

would this include support for import/export of NDF? https://www.prisma.io/docs/prisma-cli-and-configuration/data-import-and-export-jsw9/#normalized-data-format

[nikolasburk]

I've the docs for native imports/exports here: https://github.com/prisma/prisma2/tree/master/docs/import-and-export-data

@chrisdrackett For as long as we don't support NDF with the Prisma Framework, you can use the described workflows to import/export your data 🙌