feat: Implement theme toggling and enhance dashboard component theming

This commit introduces a theme toggle functionality in the application header
and improves the visual consistency of dashboard components across different
color schemes.

- Added light/dark mode toggle to  using Mantine's .
- Ensured all  components in  have visible borders in both light and dark modes by adding the  prop.
- Made  colors in  theme-aware, dynamically adjusting their background color based on the active color scheme.

Additionally, this commit includes a large refactoring operation, moving various
component files from  to  and updating
their references.

package.json

@@ -66,7 +66,6 @@
 		"embla-carousel-react": "^8.1.1",
 		"input-otp": "^1.2.1",
 		"lucide-react": "^0.563.0",
-		"next-themes": "^0.4.6",
 		"openapi-fetch": "^0.15.0",
 		"pino": "^10.3.0",
 		"pino-pretty": "^13.1.3",