Add camera setup support for pyvista backend

[waltersma]

📝 Description of the feature

it is useful to be able to set the camera setup before showing a graphics display, for instance when saving an image directly to file.

💡 Steps for implementing the feature

No response

🔗 Useful links and references

No response

Note

Before contributing and starting any work, please make sure you agree with the CLA and sign it in your PR.