eat: add dark mode support to auth section with test toggle button

[Marvelousmicheal]

Description

Please include a summary of the changes and the related issue. List any dependencies required for this change.
This update introduces dark mode support for the authentication section. A test button has been added to toggle between light and dark mode, ensuring a seamless user experience.

Changes:
Implemented Tailwind's dark: class for styling the auth section.

Added a button to toggle between light and dark mode.

Ensured theme persistence for better usability.

Testing:
Verify that the auth section correctly switches themes when clicking the toggle button.

Check for consistency across different devices and screen sizes.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• [ x] New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other

Checklist

• [ x] My code follows the code style of this project.

Related Issue

• Closes Improve Dark Mode Styling on Auth Section #107

Screenshots (if applicable)

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Name	Status	Preview	Comments	Updated (UTC)
starkwager-frontend	❌ Failed (Inspect)			Mar 27, 2025 6:24pm

[Ayoazeez26]

@Marvelousmicheal the toggle button you created you don't seem to be using it anywhere so you can take it out and fix your merge conflicts and we're good to go