Add ColorTable to VCD Raster Output

[j9ac9k]

#54 Added support for colorizing point clouds in the VCD output, that feature should be added to the rasterization output as well.

Some references to keep in mind while implementing this feature:

https://www.github.com/qgis/QGIS/issues/22427
https://www.github.com/noaa-ocs-hydrography/qgis-raster-attribute-table-plugin