Seed file

Updated to include images. We only have 20 items now (I wasn't creative enough to come up with more items and pictures, but we can add more if we have time), but they all have pictures. Reorganized the seed file a bit to make it easier to give each thing a picture. Oh, the burgers all still have the default burger picture... there are a lot of sub-par burger pictures on the internet.

Next thing is adding orders. Working on that now.