Added 18 new icons + Updated some icons

[Kvasenok]

This PR is mostly to fix #936, but also to add a few more icons and update some old icons.

Added icons:

1. Scryfall
2. Roberts Space Industries (Star Sitizen)
3. Nexon
4. Square Enix Games (+ Dark Mode)
5. Skinport
6. Shadow
7. Technic Pack
8. Auth0
9. OneLogin (+ Dark Mode)
10. JumpCloud (+Dark Mode)
11. Delinea
12. ORCID
13. Kick
14. HP
15. Lenovo (All I could find was a logotype, guess they don't have a logomark)
16. Tibia (Again, I really don't like this icon, but it's all they have)
17. Fansly (It's not against the rules + it's definetly in the rank range and we have onlyfans icon already, but I'll remove it if it's too much)
18. Fandom (it's within Similarweb's top 50 rank, I'm surprised it wasn't added earlier)

Updated icons:

1. Bitrix24 (Favicon was used before, now it's more of an icon and has transparent background)
2. Groups.io (App icon (?) was used before, now it has transparent background)
3. Pochta (+ added Dark Mode) (The previous icon is just old and unreadable. They insist on using logotype as an icon + their actual icon is logotype on blue background)
4. OVH (added Dark Mode)
5. Vimeo (Swapped colors, removed background)
6. Keeper (added Dark Mode)

[jamie-mh]

Thanks @Kvasenok ! The icons look really good.