Migration support from TablePress to wpDataTables#489

We are trying to move from TablePress to wpDataTables on a large multisite where over 100 sites contain tables in the TablePress format. We want to migrate those tables for our constituents to wpDataTables, so they don’t have to manually recreate each table.

To keep the scope reasonable, it would be extremely helpful to just have a way to programmatically create wpDataTables with a function call or a hook. At the outset, having a way to create “simple” tables with an array of row data would do to the trick.