Add GitHub issues and discussions, and demote JIRA to legacy

[lprimak]

Shiro recently added GitHub issues and discussions.
We also deprecated JIRA for issues. While JIRA still has issues, it's only used for archival purposes,
and not for new issues.

We need to update documentation to add GitHub issues and discussions, and demote JIRA to archival status

[lprimak]

@GaneshPatil7517 Would you like to do this one as well?
Thank you!

[GaneshPatil7517]

ok @lprimak assign me ill work on this....

[lprimak]

Done!