feat: update UI components for dark mode support and color scheme changes

- Refactored About, Contact, Gallery, Home, Services pages to enhance dark mode compatibility.
- Changed color schemes from orange to sky for various elements.
- Updated background colors and text colors to improve readability in dark mode.
- Added dark mode configuration to Tailwind CSS.

tailwind.config.js

@@ -0,0 +1,3 @@
+module.exports = {
+  darkMode: "class",
+};