Add widevine-aarch64 package

[andirsun]

** Please describe why this package is not eligible for Fedora ?**
I think this package add support in a unofficial way for play DRM widevine content on arm64 laptops (eg Fedora asahi remix for apple macbooks)

The package is on AUR so DRM content can be played on Arch linux but not on fedora.

** Is this software redistributable ?**
Dont know

** Is this software an alternate version of a Fedora provided package ?**
Nope

Additional context
AUR package https://aur.archlinux.org/packages/widevine-aarch64
Problem to solve https://www.reddit.com/r/AsahiLinux/comments/153un96/has_anyone_had_any_luck_packaging_widevine_for/

[leigh123linux]

It would have a better chance of being packaged if you do it.

https://rpmfusion.org/Contributors

[kwizart]

It's possible to use lpf framework to package such non-redistributable content.
Still need someone to volunteer.

[kwizart]

(side note, I think firefox download automatically at runtime their version, is there also an aarch64 build).