Proposal: Separate internal and public functions into different files to help with Diamonds

[RogerPodacter]

I'm using the Diamond standard and it would be useful for me to be able to _mint() from multiple facets.

However, multiple facets cannot inherit from ERC721AUpgradeable because ERC721AUpgradeable has public functions and multiple facets cannot define the same public function.

I propose adding a ERC721AInternal contract that Diamond-ers can inherit from in multiple places. This would not affect anyone else as they could continue inheriting from ERC721AUpgradeable (basically what I'm proposing is a copy-paste).

SolidState takes this approach for their ERC721, so it has been done!

Thanks!

[Vectorized]

The contracts here are generated by a transpiler tho. It’s too much effort to rewrite the transpiler for this.

I’ll suggest forking and doing the changes. ERC721A has been stable for months.