[DISC] Upcoming feature: Replay Checker

[WillLem]

RetroLemmini will (at last!) be getting a replay checker which can run a replay in simulation mode (i.e. no rendering, audio, etc) and determine its result.

I've already begun work on this and it's more or less fully functional (still ironing out some rendering kinks). It currently runs automatically whenever a replay is loaded and displays the result in the window caption. This will be standard behaviour when loading a replay, so that the result is visible without having to watch the entire replay.

The plan is to allow multiple replays to be checked (basically, a Mass Replay Checker similar to NeoLemmix's), but that's a slightly bigger step and I'm looking for feedback on how users would like this feature to operate. Replay renaming is of course on the cards already, but is there anything in particular that would be useful when mass checking replays specifically in RetroLemmini?