Add Tables for Tracking User Pantry Content

[Issier]

Description: Tables are needed to keep track of users and associate them with the contents of their pantry as well as the recipes in their cookbook. This enables one of the core envisioned use cases of PantryParser

AC:

• Table user created
  • Fields include:
    • id: int
    • name: varchar
• Table pantryentry created
  • Fields include:
    • id: int
    • user_id: int, foreign_key user.id
    • ingredient_id: int, foreign_key ingredient.id
• Table cookbookentry updated
  • New field, user_id: int, foreign_key user.id