Create Transaction page

[ankitt26]

In this PR, I did -

• Transactions page

  • For a given category, the list of transactions is presented, ordered by the most recent.
  • At the top of the page the user could see the total amount for the category (sum of all of the amounts of the transactions in that category).
  • There is a button "add a new transaction" at the bottom that brings the user to the page to create a new transaction.
  • When the user clicks on the "Back" button (<), the user navigates to the home page.

• "Add a new transaction" page

  • The user fills out a form to create a new transaction with:
    • name (mandatory)
    • amount (mandatory)
    • categories (mandatory at least one)
  • The user click (or taps) the "Save" button to create the new transaction, and is taken to the transactions page for that category.
  • When the user clicks on the "Back" button (<), the user navigates to the transactions page for that category.