new jira creation functionality not working in jira version > 8.4

[palashkulsh]

In jira 8.4 and greater,the jira apis have been changed

for fields
https://jira.yourdomain.com/rest/api/2/issue/createmeta/MDO/issuetypes/3?startAt=0&maxResults=50

for all exposed urls and functionalities
https://jira.yourdomain.com/rest/capabilities

for project
https://jira.yourdomain.com/rest/api/2/project

for issue types
https://jira.yourdomain.com/rest/api/2/issue/createmeta/MDO/issuetypes?