Feature/lmc 002 shop

[lakshusan]

Frontend

• Organized into basic ingredients and additional
• Assign sale values
• Make a table for item and quantity owned (inventory)
• Fetch code for database to table
• Fetch current items, current points

Backend

• POST for buying ingredients
• GET for seeing ingredient list
• PUT for appending new ingredient to 'inventory'
• Link for connections
• Fix SQL schema (items column)
• Adjust point balance based on purchases