[Avogadro-devel] GitHub action buildbot

I spent more time than I probably should getting a GitHub action build matrix going:
https://github.com/ghutchis/avogadrolibs/actions/runs/74990496

At the moment, it only builds Ubuntu and Mac versions and uses CPack to save the binaries.

I had trouble getting the Windows builds working.

molequeue/client/CMakeFiles/MoleQueueClient.dir/client.cpp.obj:client.cpp:(.text+0x7ad): undefined reference to `__imp__ZN10QArrayData10deallocateEPS_yy'

I don't know if there's something needed for proper Windows compiles - happy to send info to anyone who wants to fuss with it.

-Geoff