Add DataExports endpoints

[martinfobian]

Reason for change

Missing DataExport methods/endpoint.

Code changes

• Added endpoint for DataExport and added to client.
• Added entity class with properties from API docs (https://docs.almapay.com/reference/data-export)
• Added data property to response class, since downloading the generated report file is not a JSON response and needs access to the "raw" response data.

How to test

Call methods create, fetch and download on the DataExports endpoint, check responses and generated file output.

Checklist for authors and reviewers

Have not written tests yet, since I don't have access to the internal docs and tools. Feel free to amend or give guidance on how to proceed. Thanks.

[sonarcloud]

Quality Gate passed

Issues
9 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud