add notebook that uses titiler-pgstac endpoints for raster mosaics

[hrodmn]

• use the icesat2-boreal dataset as an example

• demonstrate the /collections and /searches endpoints

The tile performance is pretty slow for the icesat2-boreal dataset - maybe there are some database tweaks that could improve performance or maybe just a larger database instance would help!

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[hanbyul-here]

👋 I was trying to run this notebook locally and got the error that featureBounds is not defined. I worked around it by using the bounds information from stac, but leaving the comment here in case this helps!

[wildintellect]

@hanbyul-here thanks for catching that, I hadn't run the notebook yet. @hrodmn are you missing an import for the featureBounds function?

[hrodmn]

Yeah, I found the issue - will clean it up and push a change!

[hrodmn]

@wildintellect I addressed all of your comments - anything else you want to change before we merge this one? @hanbyul-here is there anything we should add based on feedback from the presentation at FOSS4GNA?

[hanbyul-here]

Nothing from my end! (and I could run the entire notebook!)

[wildintellect]

@hrodmn I think all that's missing is adding the page to the table of contents. https://github.com/MAAP-Project/maap-documentation/blob/develop/docs/source/technical_tutorials.rst

sorry the visualization sub-index https://github.com/MAAP-Project/maap-documentation/blob/develop/docs/source/technical_tutorials/visualizing.rst