Add #seed method to factory?

[robacarp]

related to luckyframework/lucky_cli#677

I have a feature flagging system in my app which allows me to ask "can a user do X?", each feature is stored in the database and can be enabled on a per-user or system wide basis. When I add a feature to the code, the answer is always "no" until I add the feature record to the database. In production this means shelling into the database and manually inserting a record! 🔥 ↔️ 🚒

Adding a #seed method to Factory might make this easier if it:

• assembles a list of attributes which are set by the factory.create block
• checks for a matching record and returns it if it exists
• delegates to #create if it doesn't exist.

Is that worth doing?