Add OCM communication feature

Communication with OCM should be decoupled from the policy service and be up to the policy developer. However, the policy developer should be able to query the OCM for their purposes. That's why we need to create a helper function to interact with it.

The merge request contains the scenarios for the e2e case of OCM communication usage

features/ocmAuthCommunication.feature

+As policy administrator
+I want to evaluate OCM communication feature
+So I am able to create policies to control login functionality
+
+Scenario: Make request for QR code and presentationID
+Given the policy to query OCM is uploaded to the system
+When I send a request to the OCM service to evaluate policy
+Then I get a successful response
+And the response contains the link to the QR code
+And the response contains the presentationID
+
+Scenario: Make request for getting claims by presentationID
+Given the policy to query OCM is uploaded to the system
+Given the request to the OCM service 
+When I send a request to the OCM service
+And the request contains presentationID
+Then I get a successful response
+And response contains requested claims
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