Add FLARE-ON countdown

[Ana06]

Details

Once we know the date of the next FLARE-ON challenge it would be fine to add a count down in FLARE-VM. Any ideas of how/where to best add it? Alternatively, we could also add it to the Windows calendar.

[Ana06]

@mandiant/flare-vm any other fun ideas?

[mr-tz]

IMHO also not really worth the effort and/or noise in the VM

[emtuls]

I think it's a cool idea, but in different if it's something that should be added as an autostart or just something sitting in a directory with other FlareOn Challenges.

Not sure on the amount of effort, but I wonder how much of the current implementation we can just copy and paste? That way it's a standalone .html page that can be opened and viewed, sort of like how CyberChef works.
If it's that simple, then there isn't a whole lot of effort involved. :)