AWS 2-6: Document How to Visualize 10m LULC Tiles from TiTiler

[rajadain]

Following up to the TiTiler instance created in #3621, establish how to visualize the 10m LULC dataset with that, and add it to the MMW-Tiler README.

Ideally we'd have a {z}/{x}/{y} style URL that we can GET with Leaflet, that will pull tiles from this collection https://api.impactobservatory.com/stac-aws/collections/io-10m-annual-lulc/items and show them in the right colors. The tiles would be mosaicked and rendered in Web Mercator.

In case this is more complex, requires preparatory POST calls or other dynamic information, document that as well.

Add a gif showing the tiles on a Leaflet map rendering on pan and zoom.

We should be able to:

• Tile individual scenes
• Tile all the scenes using a mosaic of all the images