[pt] Taxonomic classes/families

Hello @jaumeortola

I have been wanting to add taxonomic words to the added.txt and spelling.txt for scientific writing.

However, the Portuguese dictionaries don’t have the terms.

I can only find them in Wiktionary for reference, and even that way tons are missing.

A scientific article which I reviewed for a Professor had the words:
Coronaviridae
Alfacoronavirus
Betacoronavirus

If I find the words in Wiktionary how should I add them to Portuguese?

In uppercase? And the gender? Proper names, nouns?

Thanks!