Add Record Slash Command
Can now use /record to make pawa record!!!1 (merged)
This change did require more changes than normal but this is the main purpose of the bot. The majority of the changes were around error handling and where that happens. Before it was split between the Record class and the BotUtils.recordVoiceChannel function. Now it's a bit more sane, the Record class handles errors with inputs and BotUtils.recordVoiceChannel ensures the viability of starting a recording with assertions.
Closes #53 (closed)