Gameplay loop for v0.1.1 (Patreon)

I feel Delicious Business needs a gameplay loop, so I added in customers that spawn just now. The game should feel a bit better now in version v0.1.1. It will of course get expanded upon, there will be different customers that do different things such as CC (stun) one of your girls, or a button where you can service more than just 1 customer.