Support checklist plugin

Description

Research if we can support some of 3party checklist solution from Marketplace.
Do they expose API? If no, contact them and check if they are willing to integrate.

Related: https://ossapps.atlassian.net/browse/SUP-3955

https://railsware.atlassian.net/wiki/spaces/CHK/pages/92176610/Jira+REST+API.+Read+Write+checklists

Child issues

Issue Type Icon ESFJ-408 Smart Checklist for Jira Priority: Medium Assignee:
Released
Issue Type Icon ESFJ-409 Issue Checklist for Jira (Free/Paid) Priority: Medium Assignee:
Released
Issue Type Icon ESFJ-426 Improve rendering of mentions in smart checklist for Jira Priority: Medium Assignee:
Released