Add fedora support

[ryzendew]

Since fedora is removing codec support from mesa in 36/37 anyway someone can add a script to build this mesa on fedora.
It would be the most useful thing and save fedora’s ass

[D0nnieD4rk0]

here you go: https://copr.fedorainfracloud.org/coprs/xxmitsu/mesa-git/
this is a copr repo so be careful