$unfurl Presentation Improvements

[necopinus]

A couple of interesting ideas came up around $unfurl:

It might make sense to change the unfurl from just a more-or-less straight re-post to an embed (like the menu system uses). Advantages:

• Makes unfurls stand out a little more.
• Perhaps allows us to embed the original poster's avatar, etc.
• Would enable us to embed a link to the original post in the unfurl.
• Could add a note about who requested the unfurl.

The last two of these points would then allow us to have the bot delete the original $unfurl command after generating the embed, which will make things look cleaner in the channel.

Main disadvantages:

• This is a major rewrite of how the functionality is handled.
• Posts are limited to 2000 characters, but embed fields are limited to 1024 characters, so this could cause some problems. It looks like embed descriptions have a 2048 character limit though, so perhaps this can be used? (I'm having trouble finding official documentation about embeds though, and am running off the documentation for Discord.js.)

[tilnow]

i actually want message to look as normal as possible. still considering option of auto-delete of original unfurl message