Intro

Write a console app which starts by asking:

1. Category
2. Product Name
3. Price

Level1

• Create classes for Category and Product. Use these classes when you add items to a list.
• You should be able to add items to the list(s) until you write "q" (for quit).
• Exit by presenting the list.

Level2

• Add price and summarize inputs when presenting.
• Quit the list after "q" is written.
• The list should be sorted from low price to high and a sum at the bottom.

Level3

• Refactor your code using "Linq".
• Add Error handling to your console app.