[TODO] Add a Expenses feature

[gbowne1]

Expense page: This page allows users to view and edit their expenses. The expense page will include components such as ExpenseList and ExpenseItem.

It will use the page in /pages/Expenses.js/ to attach the child components to

Expense tracking: This feature could allow users to track their expenses in real-time and categorize them based on different criteria, such as date, type, and amount. It can also include features like receipt scanning and automatic expense categorization

Expense categories: Users should be able to categorize their expenses based on different criteria, such as date, type, and amount. This can help users identify areas where they may be overspending and make adjustments to their budget accordingly.

Expense history: The expenses page should provide users with a history of their expenses over time, allowing them to see how their spending patterns have changed and identify any trends or patterns.

Expense details: Users should be able to view detailed information about each expense, such as the date, amount, and category. This can help users identify any discrepancies or errors in their expenses and make adjustments as needed.

Expense tracking: The expenses page should allow users to track their expenses in real-time, ensuring that their budget is always up-to-date. This can include features like automatic expense categorization, receipt scanning, and expense reminders.