Add Expense Tracker Script

[AnkithaMadhyastha]

Create a simple script to track daily expenses. The tool should allow users to:

Add an expense with category, amount, and date (default = today)

Store data in a CSV file

Show summaries for day, week, and month totals

[Vaibhav2154]

@AnkithaMadhyastha Modularize the logic such that if the script is connected to the backend tomorrow. Instead of using json we should be able fetch data from the database directly

[Vaibhav2154]

@AnkithaMadhyastha Any progress??