async function createIssue(event) {
  const requestJson = await buildCreateIssueRequest(event);
  const requestBody = JSON.stringify(requestJson);
  const response =
        await fetch(`${jiraUriConfig.value()}/rest/api/3/issue`, {
          method: "POST",
          headers: {
            "Authorization": authHeader(),
            "Accept": "application/json",
            "Content-Type": "application/json",
          },
          body: requestBody,
        });
  if (!response.ok) {
    throw new Error("Issue creation failed: " +
                    `${response.status} ${response.statusText} for ` +
                    requestBody);
  }
  const json = await response.json();
  return json.self; // issueUri
}
Creates new issue in Jira.
@param {AlertEvent<InAppFeedbackPayload>} event