Add polifactory to Testing:Object factory

[hectorcanto]

What is this Python project?

A Factory or Mother library with mock data features

What's the difference between this Python project and similar ones?

It is somewhat similar to factory-boy (already listed) but I find it simpler with a softer initial learning curve.

I've been working with factory-boy for years and I am a big supporter but polyfactory makes it simpler to achieve the most common fixture generations.

If you are starting with fixture generation I would recommend going to polyfactory first or at least taking a look and comparing it with factory-boy, especially if you work with Pydantic.

--

Anyone who agrees with this pull request could submit an Approve review to it.