Create Classes to save info on the Database

[JovanniRamirez]

Record information on the following:

• [x] Customer
• [x] Sales Transaction
• [x] Car Inventory
• [x] Sales Person (might be added to asp role instead of here)
• [x] Customers Car
• [x] Service Appointment

[JovanniRamirez]

Completed classes in order to update the tables for when setting up the database connection.