Set up CI

[quetric]

Set up github actions for continuous integration. These would:

• build driver
• build VRT lib
• package and test installation
• build examples for sim/emu
• run examples against sim/emu
• build examples for hw (needs vivado-capable runner)
• run examples on hw (needs v80 runner)

[hpc-aulmamei]

I will integrate the first 5 items in CI/CD.