New Package: Chafa

[Yonle]

Fixed mess of #7488

[ghost]

Does it provide something new besides what termimage, timg, jp2a can do?

[Yonle]

Yes. There's a difference between those package with Chafa

[ghost]

Which exactly?

[Yonle]

Gah. Can't tell the difference between those package with Chafa. But there's also a test:

[ghost]

timg has similar, if not exact or even better, image quality. Also supports animations and video output (quite smooth btw). Additionally timg has image gallery feature. So I'm curious, why need another one image viewer if it doesn't add anything new?

https://github.com/termux/termux-packages/blob/master/CONTRIBUTING.md#packaging-policy

...requested packages should met these conditions:

• Not serving duplicated functionality

  Please avoid submitting packages which duplicate functionality of already present ones

[Yonle]

After some search, Chafa, has a feature like

• watch that used to watch a file then change output whenever the file content is changed
• color mode which can reduces how many color thatvwe should view
• There's also a way to change output format like iterm, kitty, sixel, and more so like that.
• There's also a option to invert a video.

Well, maybe opening this PR to put some alternative.

[ghost]

Ok, merging it now. Just know that I'm against any duplicate stuff, unless there is a strong reason to have it added. Repository size is very close to go beyond the expected disk usage (50% for .deb packages):

--[censored]--:~$ df -h
Filesystem      Size  Used Avail Use% Mounted on
...
/dev/vda1        32G   17G   15G  52% /
...
--[censored]--:~$ du -hs /srv/termux-host/aptly-root/
12G     /srv/termux-host/aptly-root/

I really don't know what will be if we decide will add repository with Android APK package format (for termux/termux-app#2155), as that effectively will use 2x more space than we're using now.

So next time please add things that will be useful for everyone and not because you've just discovered it and was able to compile. There are still a lot of packages pending to be added.