Fix some of the Jikan entries not working

[stefan9999991]

The Jikan api has been having issues for a few days now, and I found some improvements that makes entries work that didn't work before.

For example:
GET https://api.jikan.moe/v4/anime/38671 returns a 504 {"status":504,"type":"BadResponseException","message":"Jikan failed to connect to MyAnimeList. MyAnimeList may be down\\/unavailable or refuses to connect","error":null}

However,
GET https://api.jikan.moe/v4/anime/38671 with Accept-Encoding: gzip, deflate, br, zstd returns a 200 with a valid response.

After further testing, it is only this exact Accept-Encoding string that works. Changing the order or removing one of the encodings causes a 504 again.

Furthermore, some projects, like MALClient use Xamarin that automatically use HTTP/2.0, however Jikan doesn't support HTTP/2.0. That's why I also added an intercepter that forced requests to use HTTP/1.1, regardless of the used HttpClient

In my testing, these fixes caused 9/10 requests that failed before to work again, however still not all work. However, for now this makes the library a lot more usable again :)