Major change: Removed all related to official Api method.

[UshiHiraga]

Hello.

This PR deletes everything related to the official API method. By everything, I mean code, types, documentation, exports and packages.

There were three main reasons why I decided to delete that chunk of functionality:

• It used three packages (all removed), of which: One (xml2js) was outdated and gave warnings, as #109 shows; and the other (request) has been deprecated since 2020, as #101 says. By the way, I think that, in this case, request could be replaced using fetch api instead.
• The class was not working at all because of the updates that MAL api has gotten, as it was mentioned in #101.
• I think it would be better to create another project to be a wrapper of the MAL api, since it is not related to this project because it is not a scraper.

I hope my reasons seem valid to the administrators. Thank you very much for your attention. Greetings.

[Kylart]

Thank you for taking the time and effort!

I see you also bump dependencies, thank you for that.

I think this should fix #101 and #109 since the dependencies won't be there anymore.

I'll publish this under a new minor release today.

Thank you so much!