Sidekiq job to create GitLab issues from JIRA project issues

Create Sidekiq job(s) that will use the Jira interface created in #208910 (closed) and the serializer created in #208911 (closed) to create GitLab issues from those in a JIRA Project.

• 100% of issues in the JIRA project should be recreated on GitLab;
• GitLab issue author should be the user that initiated the import job;
• If metadata is not included in the description in #209792 (closed) it should be added as a comment to the created issue:
  • e.g. This issue was imported from JIRA on 2020-03-04 by @johnhope;
• Job should update the state of the object created in #208907 (closed) when commenced, and
• Job should update the state of the object created in #208907 (closed) when complete.