refactor: update UI components and styles for improved consistency and functionality

- Refactored Skeleton component to include data-slot attribute and updated class names.
- Enhanced Switch component with size prop and improved styling.
- Updated Tooltip components to include data-slot attributes and improved styling.
- Refactored global CSS to use custom properties for theming and improved dark mode support.
- Added useIsMobile hook for responsive design handling.
- Updated IPC link implementation for tRPC in Electron.
- Adjusted ProjectsPage layout for better responsiveness.
- Removed outdated Tailwind configuration file and integrated Tailwind CSS with Vite.

vite.renderer.config.mts

@@ -1,11 +1,13 @@
 import { defineConfig } from 'vite';
 import react from '@vitejs/plugin-react';
+import tailwindcss from '@tailwindcss/vite';
 import { TanStackRouterVite } from '@tanstack/router-vite-plugin';
 import path from 'path';
 
 // https://vitejs.dev/config
 export default defineConfig({
   plugins: [
+    tailwindcss(),
     react(),
     TanStackRouterVite({
       routesDirectory: './src/renderer/routes',