Logo (Builtin): Change WiiLinuxNgx to more generic name

[techflashYT]

Wii-Linux-Ngx is no longer the most up to date version of Linux for the Wii. This change retains the original name for compatibility sake, and because Neagix's version does indeed still exist. It moves the ASCII art to a more generic file path, and introduces 2 new aliases for it: Wii-Linux, and WiiLinux.

I have tested this and do believe I have not broken anything, and that all 3 names do indeed work, however it is my first time modifying fastfetch, so please do let me know if I've done something wrong.

[CarterLi]

fastfetch matches distro logo by distro id. Please upload /etc/os-release so I can make sure no unnecessary ids are added.

[techflashYT]

Sadly Wii-Linux doesn't have it's own /etc/os-release (it's based upon ArchPOWER), though neither did Wii-Linux-Ngx (which simply has a stock Debian 8 /etc/os-release). None of them would actually trigger without intervention on an unmodified copy of such a system. Is there some other way that the existing WiiLinuxNgx was meant to trigger, or was it just there so one could force it with --logo? The latter was my assumption when creating this PR.

[CarterLi]

Is there some other way that the existing WiiLinuxNgx was meant to trigger, or was it just there so one could force it with --logo? The latter was my assumption when creating this PR.

I don't know. It's contributed by community but I don't have such a device.

What does it looks like now?

[techflashYT]

What does it looks like now?

Both are unmodified versions of their respective distro.
Wii-Linux-Ngx (Debian):

PRETTY_NAME="Debian GNU/Linux 8 (jessie)"
NAME="Debian GNU/Linux"
VERSION_ID="8"
VERSION="8 (jessie)"
ID=debian
HOME_URL="http://www.debian.org/"
SUPPORT_URL="http://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"

Wii-Linux (ArchPOWER):

NAME="Arch POWER"
PRETTY_NAME="Arch POWER"
ID=arch
BUILD_ID=rolling
ANSI_COLOR="38;2;23;147;209"
HOME_URL="https://archlinuxpower.org/"
DOCUMENTATION_URL="https://github.com/kth5/archpower/wiki"
SUPPORT_URL="https://github.com/kth5/archpower/issue"
BUG_REPORT_URL="https://github.com/kth5/archpower/issue"
LOGO=archlinux-logo

[CarterLi]

Okey, thanks.