EU/AU/SEA serveme support

[Ooglely]

Add support for the other regions of serveme. Would just need to add a setup field in the /serveme command that sets up the region, then use the correct region api link in the server registration functions.

[Astatham98]

Hey, looking to use your bot for an EU pug discord. Would be great to discuss the feasibility of making this issue happen. You can add me on discord: notsteven