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- Removed outdated Tailwind configuration file and integrated Tailwind CSS with Vite.

src/renderer/components/ui/skeleton.tsx

@@ -1,12 +1,10 @@
 import { cn } from "@/lib/utils"
 
-function Skeleton({
-  className,
-  ...props
-}: React.HTMLAttributes<HTMLDivElement>) {
+function Skeleton({ className, ...props }: React.ComponentProps<"div">) {
   return (
     <div
-      className={cn("animate-pulse rounded-md bg-primary/10", className)}
+      data-slot="skeleton"
+      className={cn("bg-accent animate-pulse rounded-md", className)}
       {...props}
     />
   )