auto-build

[Abe404]

The CI build process does not yet work.

the plan is that I will get it working for ubuntu 20.04 (keep altering the main.spec file until it builds) and then Andre will get it working with ubuntu 18

[Abe404]

I will post-pone this until after the prostate paper. We will just run from source until then as building the installers is not essential. The build process for 2D RootPainter seems to be working well now (it has been recently refactored) so I would like to use that one and copy it to the 3D version when I get time (after the prostate paper).

[Abe404]

Now implemented for OSX but we have issues with the built applicatoin

[rohanorton]

Added Ubuntu builds. Appears to run correctly but unable to open builds on my machine as it builds for x86 and only have arm, passing back to @Abe404 for testing.