feat: Implement dark/light mode toggle and address linting issues

This commit introduces a functional dark/light mode toggle by integrating
`next-themes` with the application. It configures `ThemeProvider` in
`src/frontend.tsx` and sets `darkMode: 'class'` in `tailwind.config.js`.

Additionally, this commit resolves several linting and parsing issues
found in `src/index.ts`.

This commit also includes other pre-existing modifications and new
components within the project's working directory that were not
specifically part of the dark mode or linting tasks.

src/vite.ts

@@ -36,13 +36,7 @@ export async function createVite() {
 		},
 		appType: "custom",
 		optimizeDeps: {
-			include: [
-				"react",
-				"react-dom",
-				"@mantine/core",
-
-
-			],
+			include: ["react", "react-dom", "@mantine/core"],
 		},
 	});
 }