Oepened a pull request for ERC721Consecutive to allow a starting token id

I would like to know if I missed anything about the contributors process.

Here is the PR https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4097, any feedback is welcome.

We've already discussed in the PR. But one piece of feedback I would mention is that before submitting a PR you should submit an issue to discuss.

See CONTRIBUTING.md.