Add file upload to database

[simondereuver]

• [x] Install the "multer" package for handling file uploads (pictures).
• [x] Create a uploads/ directory.
• [x] Create a controller/ directory.
• [ ] Create a imageRoute.js file in routes/ to handle the route of file uploads.
• [ ] Create a table named "Image" in the database.js file for the images, saving the image metadata used for accessability later on.
• [ ] Create a imageController.js file in the controller directory for handling saving image to database.

[simondereuver]

Working on this now.