Add more examples!

[mfisher87]

I started this in #15 . I'm looking to focus in two areas:

• What use cases is this method really good for? Can it visualize really large datasets performantly? What if the data is in the cloud, e.g. a Zarr dataset? Let's try to add datasets with larger coverage, maybe global, and with higher resolution. Where does TiTiler get slow? Where is it really effective?
• What tools are good targets for integration? We have one example with Leafmap, but what about ipyleaflet, ipyopenlayers, folium, etc?