tev should release Linux binaries

[Tom94]

Linux binaries would be good to have, especially now that tev requires a C++20-capable compiler, which many people do not have access to in their work environments. (see also #134)

Things on the TODO list:

• Look into AppImage and Flatpak
• Look into getting binaries into package repositories

I currently do not have cycles, so it will be some time until there is an update from my end, but if anyone is familiar with releasing Linux binaries all help is much appreciated!

[Calinou]

I might look into creating a Flatpak of tev, but I don't know if the latest FreeDesktop SDK (21.08) can compile C++20 code.

[Tom94]

We've got x64 Linux binaries now; thanks @diiigle! Low priority for future work is to also make available ARM binaries.