GitLab

I basically did the following:
`mkdir experiments/simbricks/orchestration`
`mv experiments/simbricks/* experiments/simbricks/orchestration/`

Additionally, imports and paths had to be adjusted.

Only builds base image, none of the others.

for CFLAGS, CXXFLAGS, CPPFLAGS, VFLAGS

These are slower and currently yield a lot of warnings to be fixed.

Enables local persistent configuration of build variables.