Openplotter CI like CircleCI or other

[mgrouch]

Why doesn’t openplotter uses CI like CircleCI or some other
for continuous builds? It’s easy to set up and
especially now that Openplotter is going to target multiple 
platforms like arm32, arm64 and Ubuntu on
the same architectures, and possibly Intel based
distributions it’s very important to have CI 
system in place. 

Thanks