Enhanced buttons in the slide section and addeddarkmode functionality

[We13b-MD]

Enhanced Slide Section and Dark Mode Functionality This pull request introduces two improvements to the caMicroscope user interface:

1. Enhanced Slide Section Buttons: The buttons within the slide section have been visually enhanced to improve user experience and clarity. The enhancements include adding padding for the buttons to look appealing and organized

2. Dark Mode Functionality: A new dark mode functionality has been implemented, allowing users to switch between a light and dark theme for the caMicroscope interface. This feature provides increased customization options and potentially improves eye strain in low-light environments.

Testing: Thorough testing has been conducted to ensure both the enhanced buttons and the dark mode functionality work as intended across different browsers and devices.

Results include:

Before changes:

https://github.com/camicroscope/caMicroscope/assets/122805291/bf24ab7a-e267-4294-909c-6c4e48884d18

After changes:

https://github.com/camicroscope/caMicroscope/assets/122805291/e38e9d6d-ec4d-4bd8-bd43-c3a2feff8366

In summary this pull request aims to enhance the user experience of caMicroscope by providing improved button aesthetics and a customizable dark mode option.

[We13b-MD]

@birm Enhanced buttons in the slide section and addeddarkmode functionality what do you think about this