Load list of DMs and MPDMs

[nickwynja]

Thanks for the update to using the new session tokens! I can finally try using wee-slack again.

Originally posted by @trygveaa in #844 (comment):

Unfortunately the API doesn't return if a DM or MPDM is open anymore, which caused no DMs and all MPDMs to open on start. It's now changed to only open the DMs and MPDMs with unread messages.

I want to caveat my issue with saying that I'm not very familiar with how weechat works overall; still learning. I don't think I'd need the DMs and MPDMs to show as open but I'm interested at least a list of all of the DMs and MPDMs "available" so I can tab complete them with a /go command.

[nickwynja]

Learning fast. Seems like I can do this with /query as long as I'm in a slack buffer.

[trygveaa]

Yes, you can use /query from any buffer on the same slack team to open a DM or group DM. You can get a list of all the users in the team with /slack users, so that would be all the DMs you can open, and group DMs is any combination of these users by comma separating the names, like /query user1,user2.