Simplify cross-posting for CMOC
In !77583 (merged) we did not reach a conclusion about how to simplify cross-posting e-group messages to community/CS.
We do think cross-posting is better than tagging a group in Slack because the surface area is larger.
In discussion @tristan indicated that using Slack workflows we can use emoji reactions on the e-group message to mechanize the posting to other channels.
This seems like a sensible next iteration, unless there are other thoughts?