Add `/community-call` command

[natemoo-re]

It would be helpful if we had a command that automates some of the annoying, repetitive parts of posting an announcement about the weekly community call! cc @ElianCodes.

Requirements:

• Role-restricted slash command (@maintainers). Can be posted in any channel.
• Automates the following fields in an embed:
  • WHEN: Localized timestamp when the event begins (a shortcut might be to just use "at the top of the hour")
  • WHERE: Link to the #stage channel (it has historically been #stage OR #chat so this might need to be dynamic?)
    • Possible? Share the link to the existing community call event.
  • WHAT Provide an option to customize the announcement message
    • Optionally, link to the agenda for the call? Could just be part of the message, I guess
  • WHO: Option to ping certain roles or just @notify-events? Default would probably be no pings.

[ElianCodes]

I really love this idea! It would make my job so much easier.

Typically I do two things:

• post a message in #general a couple of hours before the call
• post a message in #general when we are actually starting

It would be awesome if we could somehow find a good solution for both of those.

Here are my thoughts on the fields:

• Localised timestamp would be amazing. We do have the time in the event, so maybe we could extract that somehow, I would much prefer to show an actual time over "in x minutes" or "at the top of the hour"
• The channel from now on always should be #stage, so it's not a must to make it dynamic
• I don't care too much about customising the announcement message (I'm always down to brainstorm on a good default message)
• for now, a ping doesn't have to be included, we're rethinking the pinging system

I hope this can be of help! Ping me whenever you want to talk about this!

[ElianCodes]

Also, maybe this could be another issue or command, but this got me thinking.

What if we also made a /community-call-agenda command to post in #maintainers, where I have to post every week to draw people into speaking or filling the agenda for the community call.

It would look something like this:

• pings @maintainers
• field for thread of that week (or maybe just start a thread from that command?)
• text: "Hey @maintainers, a new community call thread has been started. Want to speak or participate? Fill the agenda here: <link-to-thread>"