Support for tracker URLs inside mihon

[Shamicen]

I implemented a field for website URLs.

Features:

Users can open a tracker-links manga inside the Mihon tracker search by pressing "Open in Mihon:

(Only logged in trackers have this option)

New custom icons for every external tracker:

Other

• Tracker use their name inside the Chip.
• I still need to implement URL validation for Http-Source manga. I would like some feedback about the best place to do this.
• Kitsu and MangaUpdates do not have the manga id in their tracker URLs, so I'm only performing a normal search at the moment.
• We could implement a copy metadata from tracker button once Edit basic Manga information #398 is merged.
• The chip will only be shown if its manga is not already being tracked.
• The MyAnimeList logo has 2 versions, the current one is the "stretched" version, we could change back to the normal version if wanted.

Icons

I used the program mentioned in CustomIcons.kt (https://github.com/DevSrSouza/svg-to-compose) to turn the svg files into Kotlin code

The icons are from the following sources:
MyAnimeList: (CC0 License) https://icon-icons.com/icon/myanimelist-logo/248409
Anilist: (CC0 License) https://www.svgrepo.com/svg/329929/anilist
Kitsu: (CC0 License) https://www.svgrepo.com/svg/330791/kitsu
Shikimori: (CC0 License) https://www.svgrepo.com/svg/306721/shikimori
MangaUpdates: I used the image inside res/drawable-nodpi/ and made a svg from it.
Bangumi: I used the image inside res/drawable-nodpi/ and made a svg from it.

All external Icons are licensed under CC0

[AntsyLich]

Tracker is one thing but like only 2 site I know include those, Not really interested in other web links.

[Shamicen]

Tracker is one thing but like only 2 site I know include those, Not really interested in other web links.

OK I'll change it to only display tracker links.

[Shamicen]

OK I'll change it to only display tracker links.

Done

[AntsyLich]

Can you extract the non-ui bit on a separate pr