Create a migration that copies the quiz data to the new tables

[m1r0]

Goal

The goal of the card is to implement a migration job that copies the quiz data from comments to the new tables.

Scope

• Create a migration job that copies the quiz data from comments to the new tables.
• The migration job should run as a background process.
• To avoid timeouts, the migration job should process a limited number of rows (~250?) and continue in a new process.
• If storing related data in multiple tables, consider using MySQL transactions.

Notes

• For making the migrations, could use a similar approach as sensei-pro or woocommerce.