Improvements to 2D scatter exporter

[Carifio24]

This PR contains some updates from @victoriaono and myself to the 2D scatter exporter. These updates include:

• Add support for lines
• Respect current foreground/background color settings
• Add support for vectors and error bars in rectilinear mode
• Improve point size scaling
• Use plotly's Scattergeo for full-sphere projections

The exported vectors don't match up 100% to what's in glue - I tried to match the glue/matplotlib scaling as closely as I could. The arrowheads on vectors behave a bit differently as well - it doesn't seem to be possible to get the arrowheads to be symmetric about the vector like the matplotlib ones are.

Vectors and errors bars are only implemented for the rectilinear projection - other projections can be tackled in a future PR.

[Carifio24]

Rebased to also fix a codestyle issue that's present on main so that CI tests can run.