Introduce a theme toggle within the DoubleTick panel that allows users to switch between Light Mode and Dark Mode.

Expected Functionality:

Provide an option to switch between Light Mode and Dark Mode.

Ensure all sections of the panel, including dashboards, inbox, bot builder, settings, and other modules, support both themes.

Retain the user's selected theme across sessions.

Provide an easy-to-access toggle within the user settings or profile section.

Business Objective: Improve user experience, accessibility, and visual comfort, especially for users who spend extended periods working on the platform.