Update JIRA Macro to use Rest API instead of XML API

The current Jira Macro uses the legacy XML Jira APIs to fetch issues, for example: 

/sr/jira.issueviews:searchrequest-xml/temp/SearchRequest.xml?jqlQuery=issueKey+in+%28ISSUE-1%29&tempMax=20 

The problems with this approach are:

• this is an old endpoint that is no longer maintained, and is subject to change
• this endpoint does not support Bearer Authentication

The need is to update this extension to use the Rest APIs instead, such as:

rest/api/latest/issue/ISSUE-1?expand=schema%2Cnames%2Ctransitions