Make some commands ephemeral/hidden

[PointerRain]

Some commands should be always visible, and some commands should always be hidden, however, we should give the user the option to make their command usage private or public, without having to move to DMs.
There is no harm in commands being nonephemeral, for the most part, but it would be good if you didn't have to announce to the entirety of UQCS when you're getting pizza.

Below are some thoughts on what commands should be always visible, visible with the option to hide it, or hidden with the option to show it.

Command	Hidden
bgg	Default visible
binify, caesar, hexify, morse	Default hidden
cat	Always visible
coin	Default visible
conduct	Default visible
courseecp	Default hidden
cowsay, cowthink	Always visible
dominoscoupons	Default visible
events, allevents	Default visible
hackathon	Default visible
httpcat	Always visible
hoogle	Default hidden
latex	Default visible
membercount	Default hidden
mock	Default visible
pastexams	Default hidden
remindme	Always hidden
repo	Default visible
scare	Default visible
scry	Default visible
smoko	Always visible
snailrace	Always visible
syllables	Default hidden
uptime	Default visible
votey	Always visible
whatsdue	Default hidden
whatweekisit	Default visible
xkcd	Always visible
xsampa	Default hidden
zalgo	Always visible

Ephemeral commands can be implemented for commands that need to defer using
await interaction.response.defer(ephemeral=True).

[ndrwbrwn]

I'll ask what the rest of infra thinks about it, but it feels a bit like pointless effort when DMs exist - if you're interacting with the bot in the server, the default presumption should be that you're interacting publicly.

I'm not fantastically interested in us breaking that default, for any command, because (yeah yeah slippery slope fallacy whatever) I feel like we shouldn't even pretend we'll maintain that guarantee. For example, remindme isn't private, no matter whether you DM or not, because they go to the same DB and the debug commands will display your reminder no matter what. I don't think we should then enable people to mistakenly pretend it is private by hiding the message by default.

[JamesDearlove]

imo, I think almost all bot commands should remain default visible as is and if you really don't want them public, to consider dm'ing the bot. Mostly as commands like hoogle courseecp and pastexams for example, can add to the existing conversation about what is going on.

As a public server I don't necessarily want to hide cool interactions with the bot, as it encourages discussions around improving the bot. We also embrace the chaos of "testing in prod" on occasion, and it's kinda funny when things break in a spectacular fashion.

My exception to the rule here are commands that are tied to you in some way. iirc currently only mcwhitelist, as you may not want to broadcast your Minecraft username to the entire server.