Issue/367 user to task and questionnaire response association

[hhund]

• Task resources with status requested now need to reference a practitioner using system http://dsf.dev/sid/practitioner-identifier and the email address as value, if the resource is being created by a practitioner user. Meaning a local user that logs in using a client certificate or OIDC token, configured via role config. The behavior for local or remote organization users (authorized via allow-list) did not change.
• Implementation of the TaskAuthorizationRule changed: Local practitioner users with DSF_ADMIN role, now have the same access as local organization users.
• QuestionnaireResponse resources can now be configured with an authorization extension. If the extension is present, local practitioner users with either a specified identifier or role are allowed to update the resource from in-progress to completed.

    {
    "resourceType": "QuestionnaireResponse",
    "extension": [
      {
        "url": "http://dsf.dev/fhir/StructureDefinition/extension-questionnaire-authorization",
        "extension": [
          {
            "url": "practitioner",
            "valueIdentifier": {
              "system": "http://dsf.dev/sid/practitioner-identifier",
              "value": "practitioner@organization.com"
            }
          },
          {
            "url": "practitioner-role",
            "valueCoding": {
              "system": "http://dsf.dev/fhir/CodeSystem/practitioner-role",
              "code": "DIC_USER"
            }
          },
          {
            "url": "practitioner-role",
            "valueCoding": {
              "system": "http://organization.com/fhir/CodeSystem/my-role",
              "code": "SOMETHING"
            }
          }
        ]
      }
    ],
    "status": "in-progress"
  }

• Implementation of the QuestionnaireResponseAuthorizationRule modified: Local practitioner users with DSF_ADMIN role, now have the same access as local organization users. Update allowed behavior for local organization users not changed.
• BPE QuestionnaireResponseHandler now updates the QuestionnaireResponse resources from completed to amended after triggering the process to complete the associated user task.
• API v2 DefaultUserTaskListener modified to allow for configuring practitioner identifier and practitioner roles via BPMN field injections. Field injections can be configured if the DefaultUserTaskListener is explicitly configured on User Tasks as a Java class for the Task Listener with event type created. If configured the DefaultUserTaskListener creates the authorization extension.
• Additional API v2 integration tests for User Tasks with Questionnaire / QuestionnaireResponse resources.
• Needed UI changes to set logical references to the current practitioner user for QuestionnaireResponse and Task input forms.
• Modified Task.requester search parameter to support virtual Practitioner resources referenced by identifier.
• Added QuestionnaireResponse.author search parameter with support for virtual Practitioner resources referenced by identifier.
• Adds QuestionnaireResponse.author to the resource and search result UIs, also adds QuestionnaireResponse.authored to the resource UI.

All modifications together allow process plugins developers to fully take advantage of local practitioner users with different roles.

closes #367