Integrate libraries for GeoJSON validation and fixing

[nkinesis]

Integrate into CITYdata some GeoJSON validation and fixing tools under development in the NGCI. Here are some scenarios I imagine would be useful:

Scenario 1

1. User writes on the query: using the output of CKANProducer (which could be, for example, a GeoJSON), I want to perform the operation ValidateGeoJSONOperation
2. CITYdata returns an output: a list of errors found in the GeoJSON (empty array if no errors found)

Scenario 2

1. User writes on the query: using the output of CKANProducer (which could be, for example, a GeoJSON), I want to perform the operation FixGeoJSONOperation
2. CITYdata returns an output: a fixed GeoJSON, or an error message in the case the GeoJSON cannot be fixed.

P.S. I will add links to the existing Python projects we will have to integrate with as soon as they are available.

[nkinesis]

One example of such tool: https://ngci.encs.concordia.ca/gitea/a_adli/jugs