provide link to slack from issue questions

[eedrah]

Providing people a link to Slack to answer their questions faster will also help us keep the issue queue focused. If people don't want this Github still provides them an option to open a blank issue.

[github-actions[bot]]

File size impact

dist (no impact)

No impact on dist files.

_{Generated by file size impact during file-size-impact#2932064769}