Allow configuration of enabled EDR queries

[webb-ben]

Is your feature request related to a problem? Please describe.
I am writing an EDR provider which I want to support a variety of EDR query types: Locations, Items, Cube, and Area. There is no way in pygeoapi to enable some queries of a EDR provider.

Describe the solution you'd like
However I want to be able to deploy instances where I can select which EDR query types I want to enable without having to maintain separate code bases. This could be some configuration variable in the provider definition that allows the enabling and disabling of certain queries.

Describe alternatives you've considered
Could have inherited providers where users could select SensorThingsEDRLocations provider which only enables that one query endpoint, and SensorThingsEDR enabling all... hm

Additional context
Add any other context or screenshots about the feature request here.