Description of the desired feature

There are many methods in the plotting section for the Figure API documentation: https://www.pygmt.org/dev/api/index.html#plotting. I expect it could help people unfamiliar with GMT modules find relevant methods if there were more sections. Here is one idea:

• Plotting tabular data
  • Figure.contour
  • Figure.histogram
  • Figure.meca
  • Figure.plot
  • Figure.plot3d
  • Figure.rose
  • Figure.velo
  • Figure.wiggle
• Plotting gridded data
  • Figure.grdcontour
  • Figure.grdimage
  • Figure.grdview
  • Figure.image
• Plotting map elements
  • Figure.basemap
  • Figure.coast
  • Figure.colorbar
  • Figure.inset
  • Figure.legend
  • Figure.logo
  • Figure.solar
  • Figure.text
• Configuring layout
  • Figure.set_panel
  • Figure.shift_origin
  • Figure.subplot

Which would look like (in part):

What do others think?