Added items in the database

added vegetable items for supplier number 2. Create order button not
working now so I can work on its layout and its functionalities
Updated the database and the supermarket gui

Functionalities added:
- when the supplier name is selected, it shows its supplied items

Database update:
- added a method for getting specific items from a specific supplier
fixing conflicts

removed <<<<<HEAD
Merge branch 'foodlink1' of https://github.com/truly-auto/SENG403 into foodlink1

Conflicts:
	src/main/java/FoodLink/gui/SupermarketSys.java
	src/main/java/FoodLink/gui/SupplierSys.java
	src/main/resources/SQL/Tables.sql