add notebook for working with pgstac

[hrodmn]

This is pull request 2/6 for the FedGeoDay Workshop:

1. add workshop notebooks #1
2. add notebook for working with pgstac #2
3. add notebook about generating STAC metadata #3
4. Add notebook about stac-fastapi-pgstac #4
5. write titiler-pgstac notebook #5
6. tipg notebook (TODO)

My goal is to get people to make a collection and upload it to the database, then see how magical it is that you can immediately view the results in STAC Browser.

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[zacdezgeo]

Wondering if we could reference a document on best practices (using pystac) to do so?

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[hrodmn]

Yep I that is covered in #3

[zacdezgeo]

Looking great @hrodmn ! So, STAC querying will come in another notebook? This one is really just for data loading?

[hrodmn]

So, STAC querying will come in another notebook? This one is really just for data loading?

@zacdezgeo yes that is the plan. We could show how to query for items using pgstac directly but I think users should be using the STAC API for that most of the time.

[zacdezgeo]

perhaps just a mention that it is possible though not recommended in that case?