feat: add Spanish (LATAM) language support + translations from champions

[itsjavi]

Since Legends Z-A onwards, the main-series games will have ES-LA (LATAM Spanish) as another official localization, apart from the upcoming PT-BR (Brazilian Portuguese) in Winds and Waves (or maybe earlier in Champions).

With this, in mind and since I am also maintaining the translations in pokepc/dataset, I thought it would be a good addition that you could also benefit from the work I've done there. The data in there is transformed from the original https://github.com/projectpokemon/champout

Change description

This PR adds a new set of scripts to create a new language entry by copying another. Since most of the content in ES-LA is practically the same as ES-LA, I initially made a copy of all the translations to the new language.

After that, I took the data of the Pokemon Champions dump used in pokepc/dataset to localize both Spanish languages properly, based on the namings used in Champions.

To see more about this process you can check the commits, which have a clean split of every chunk of work done.

Some missing spanish ES-ES translations were also added in the way. I am attaching the python script I used to import from pokepc JSON files to the pokeapi CSVs.

It can be reused to address other missing translations as well, or even use it as a base for adding the prose for Champions.

Rationale about the language codes:

14,es,mx,es-419,1,14

I haven't used ES-LA because it's not in any ISO standard. The official standard for latin-american spanish is es-419 (ugly I know). Also, since the 3rd column only supports 2 chars, I used mx which is usually the one used as a base for localizing games in latin american spanish.

I also changed the Brazilian Portuguese "official" flag from 0 to 1.

AI coding assistance disclosure

It helped creating the scripts for adding a new language and importing the JSONs.

Contributor check list

• I have written a description of the contribution and explained its motivation.
• I have written tests for my code changes (if applicable).
• I have read and understood the AI Assisted Contribution guidelines.
• I will own this change in production, and I am prepared to fix any bugs caused by my code change.

update_pokepc_names.py