support for different Version schemf for multi repo.

[kafaichoi]

with the way current config loading, it looks like there is no way to use ex_audit for different Version schema for multiple Ecto.Repo?

Will it be something that we will consider adding support for ex_audit?

I started a branch from my fork(https://github.com/AltoFinancial/ex_audit/tree/kafai--support-multi-repos). Please let me know your opinion on it. (Sorry for the code quality. I was rushing and I will further improve it if it's what we think should add for this library)

[narrowtux]

I think that's a great idea thanks.

The code itself looks fine :)

[kafaichoi]

that's great. I will work on it in the coming weekend and make a PR