Add support for OpenSCAD CLI options, esp. "viewall"

[WillAdams]

Using the nifty new OpenSCAD Graph Editor: https://github.com/derkork/openscad-graph-editor

but it calls OpenSCAD using a command-line option "viewall" which results in an error when calling rapcad.exe:

List of the options at:

https://en.m.wikibooks.org/wiki/OpenSCAD_User_Manual/Using_OpenSCAD_in_a_command_line_environment

Having a superset of the OpenSCAD options would help interoperability a lot.

[GilesBathgate]

I can quickly add a viewall option so it doesn't error. Getting it to fit the view might take a little longer. Do you want me to just ward off the error or can you wait for the full feature?

[WillAdams]

Just warding off the error would be great!

The full feature support would be gravy, but I can wait for that.

Thanks!

[GilesBathgate]

@WillAdams you can test a Windows snapshot that wards off the error if you like https://github.com/GilesBathgate/RapCAD/suites/7805119228/artifacts/329357650

NOTE Such snapshots are always available from the master branch github actions page: ( https://github.com/GilesBathgate/RapCAD/actions/runs/2855012732 )

[WillAdams]

Thanks! This is working great!

[GilesBathgate]

Fixed