ProductClass + Category

1. Added Composite Design pattern in both
2. Added an interface Composite.java
3. Implemented FUnctions to add a product and category via a single function
4. Making use of recursive calls in composite and as well in printing methods

File Reading

1. Reading and writing of products and categories are done
2. Products writing is done in products.csv
3. Categories are written in categories.csv
4. Data is successfully loading in the classes (logic layer)

DB

1. Created the schema for the application
2. Added the Database connection classes
3. Added mysql connector jar file
4. Added a script for the creation of the DB script.sql