Feature autoloader

[muvox]

We had a brief discussion via reddit about the autoloader. This is the first revision I've come up with.

With --config example it'll generate a config file to configs folder using the generate_configuration.py. Without config it'll use the default run_config.json.

I have not tested overrides or save path params cuz I haven't the time to fiddle with everything. Please give it a go and see if this is something everyone could use.

[muvox]

From what I've been testing, both solid and cadquery generates models nicely. Only pitfall i've come across is that if you're using WSL like me and generate the scad file with imports (i.e. hotswap sockets) they will point to a linux-like path like /mnt/c/whatever/hotswap.stl. This can easily be fixed by finding and replacing all the imports to windows form. Generated step files on the otherhand will have the imports correctly. I'm assuming that the script that generates the step file also reads the data of the imported files and the generated result doesn't have imports.