[AFK] Implement auto embedding of images when TagScriptEngine.EmbedBlock is used for the custom response

[AffirmativeGuy]

You, should add a image feature in AFK cog which allows you to set a image as afk reason, so that if someone ping's you, they get the image set as the reason like in Dyno's AFK command!

[mellow-org]

You can already do this with the [p]afk custom command in the AFK cog. It also supports TagScript. The [p]afk custom command allows you to set your own custom text message or embed message according to your preference. I hope that helps.

[AffirmativeGuy]

If the user uses the afk custom command then only it edits the afk message which is send when someone ping's you but I want it to be set by default so that anyone, including the ones who hasn't set custom message can include a image in afk as their afk reason.
Note: While using afk custom to put afk it requires you to put link, if we try to upload image it will just ignore it.
Sorry for so many edits.