Dynamic search request model based on extensions

[rsmith013]

At the moment, the GET and POST endpoints are based on static models and are different.
Would be good to have a dynamic model which contains the core stac endpoints and is modified by the enabled extensions to represent the state of the API at runtime.

[geospatial-jeff]

Good idea! Pydantic has a function to programmatically generate a model which should do the trick.

[rsmith013]

indeed. It is already being used. I am not sure what the Body class is for here but I am leaving it there as I don't understand it! 😆