Add logos from some general use software

[hasecilu]

• [X] mpv
• [X] Neovim
• [X] Thunderbird
• [X] Tor Browser
• [X] VSCodium
• [ ] Deluge - web related
• [ ] Jellyfin - web related
• [ ] Nextcloud - web related
• [ ] OpenMediaVault - web related
• [ ] Librewolf - web related
• [ ] OpenCV - available on https://github.com/devicons/devicon
• [ ] MariaDB - available on https://github.com/devicons/devicon

[hasecilu]

Well, some logos were merged and other 2 are available on devicon font that could be used on NF, so no need to push this.

Plex, Kodi, sqllite, MySQL, PostgresSQL were already on NF also.