feat: Add vlan range support to DB models

[ajoaoff]

Modify TAGDoc validation allowing a string with <int>-<int> format.

Fixes #318

[ajoaoff]

I may still contribute, but not regurlarly, so I can’t commit to have this finished for 2023.1

[viniarck]

I may still contribute, but not regurlarly, so I can’t commit to have this finished for 2023.1

Right @ajoaoff. Much appreciated all of your contributions over the past years. Let's leave this PR as it is for now then. I'll double check with the team if any other core team member will be able to pick it up, otherwise we'll defer it to a next release.

[viniarck]

On today's meeting we decided to deprioritize this epic from 2023.1 since the other core developers were already with other epics that also have high priority. This PR looks good, but it'll set it as a draft, in the future someone will pick it up again, once the rest of the related tasks are prioritized too.

Thanks, Antonio.

[viniarck]

@ajoaoff, once again, our team appreciated all your contributions and this PR, however, vlan range has evolved and the data model will use list[list[int]] instead that @Alopalao has specified kytos-ng/kytos#422 and it'll be implemented. So, I'll go ahead and close this PR here.