auction deletion route

[andriotisnikos1]

we need this route for #4 .

@DarthGigi has to push a public DELETE route for minion auction deletion

ideal url: /api/discord/auctions

here is the interface for the request:

interface AuctionDeletionBody {
    discordID: string;
    auctionID: string;
}

[DarthGigi]

Send a DELETE request to api/bot/auction