Add wallhaven

[trmdi]

This commit add wallhaven.cc
The user can input search keywords e.g. 'winter digital' or a full search url e.g. https://wallhaven.cc/search?categories=111&purity=110&topRange=1M&sorting=toplist&order=desc&ai_art_filter=1

Close #493
Depend on: #500

[trmdi]

error 403 after downloading some images. This does not happen when downloading through a proxy like 0ms.dev/mirrors

I don't know why this happens. Could you explain ? Note that the image direct link is still accessible if you type it in the address bar.

Edit: This issue is fixed by removing the request referrer. Not sure if the server should also handle this case.

[victrme]

Hi @trmdi !

I'm not going to accept your PR because it is mostly a copy / paste of unsplash.ts, which is not at all the way we are going to do it... Also instead of force pushing, it would be preferable to have multiple commits, and the merge should be on dev and not master

[trmdi]

I'm not going to accept your PR because it is mostly a copy / paste of unsplash.ts, which is not at all the way we are going to do it...

Oops, copy-paste is an issue? What way do you want to implement this?

[victrme]

Don't worry about trying to implement this feature, we are going to integrate it with plenty of other features, so the code will be completely different.

I also need to improve the cache system, so this too will change.

I do appreciate all the effort you are doing to improve Bonjourr, so thank you for this 🙏