Change transect highlights to be meshes #592
Description
My current approach for indicating selected pixels was to calculate the extents of each pixel and pass the info into the shaders to highlight the selected pixels. While really dope, this was extremely cumbersome and is fairly inflexible. It also doesn't help identify which pixel is which timeseries.
I will remove this old complicated method and just spawn either Planes (2D plots) or Columns (3D plots) and give them the colors of the timeseries so its easy to identify which pixels belong to which timeseries.