Add new layers

[crazycapivara]

Add new layers supported in version 7 (see #83)

• [x] bitmap layer
• [x] h3 hexagon layer
• [x] h3 cluster layer
• [x] great circle layer
• [x] raster tile layer
• [x] column layer
• [ ] vector tile layer

[crazycapivara]

tile layer example

[crazycapivara]

Add vignettes for new layers