Build JavaScript Core Functionality

Create the app.js file and implement core JavaScript functions for handling form submissions, fetching TODOs, login/logout, and API calls for add, delete, mark-as-done, and user actions.

added Required label

assigned to @gajesh24

created branch 2-build-javascript-core-functionality to address this issue

marked this issue as blocking #12 (closed)

created branch 2-build-javascript-core-functionality to address this issue

mentioned in merge request !6 (merged)

mentioned in commit 145f7e8f

closed with merge request !6 (merged)

changed milestone to %Task 1