feat: add UI components including Skeleton, Slider, Toaster, Switch, Table, Tabs, Textarea, Toggle Group, Toggle, Tooltip, and User Avatar

- Implemented Skeleton component for loading states.
- Added Slider component using Radix UI for customizable sliders.
- Created Toaster component for notifications with theme support.
- Developed Switch component for toggle functionality.
- Introduced Table component with subcomponents for structured data display.
- Built Tabs component for tabbed navigation.
- Added Textarea component for multi-line text input.
- Implemented Toggle Group and Toggle components for grouped toggle buttons.
- Created Tooltip component for displaying additional information on hover.
- Added User Avatar component for displaying user images with fallback.
- Implemented useIsMobile hook for responsive design.
- Created API utility functions for user and thought data fetching.
- Added utility function for class name merging.
- Updated package.json with new dependencies for UI components and utilities.
- Added TypeScript configuration for path aliasing.

thoughts-frontend/components/ui/input-otp.tsx

@@ -0,0 +1,77 @@
+"use client"
+
+import * as React from "react"
+import { OTPInput, OTPInputContext } from "input-otp"
+import { MinusIcon } from "lucide-react"
+
+import { cn } from "@/lib/utils"
+
+function InputOTP({
+  className,
+  containerClassName,
+  ...props
+}: React.ComponentProps<typeof OTPInput> & {
+  containerClassName?: string
+}) {
+  return (
+    <OTPInput
+      data-slot="input-otp"
+      containerClassName={cn(
+        "flex items-center gap-2 has-disabled:opacity-50",
+        containerClassName
+      )}
+      className={cn("disabled:cursor-not-allowed", className)}
+      {...props}
+    />
+  )
+}
+
+function InputOTPGroup({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="input-otp-group"
+      className={cn("flex items-center", className)}
+      {...props}
+    />
+  )
+}
+
+function InputOTPSlot({
+  index,
+  className,
+  ...props
+}: React.ComponentProps<"div"> & {
+  index: number
+}) {
+  const inputOTPContext = React.useContext(OTPInputContext)
+  const { char, hasFakeCaret, isActive } = inputOTPContext?.slots[index] ?? {}
+
+  return (
+    <div
+      data-slot="input-otp-slot"
+      data-active={isActive}
+      className={cn(
+        "data-[active=true]:border-ring data-[active=true]:ring-ring/50 data-[active=true]:aria-invalid:ring-destructive/20 dark:data-[active=true]:aria-invalid:ring-destructive/40 aria-invalid:border-destructive data-[active=true]:aria-invalid:border-destructive dark:bg-input/30 border-input relative flex h-9 w-9 items-center justify-center border-y border-r text-sm shadow-xs transition-all outline-none first:rounded-l-md first:border-l last:rounded-r-md data-[active=true]:z-10 data-[active=true]:ring-[3px]",
+        className
+      )}
+      {...props}
+    >
+      {char}
+      {hasFakeCaret && (
+        <div className="pointer-events-none absolute inset-0 flex items-center justify-center">
+          <div className="animate-caret-blink bg-foreground h-4 w-px duration-1000" />
+        </div>
+      )}
+    </div>
+  )
+}
+
+function InputOTPSeparator({ ...props }: React.ComponentProps<"div">) {
+  return (
+    <div data-slot="input-otp-separator" role="separator" {...props}>
+      <MinusIcon />
+    </div>
+  )
+}
+
+export { InputOTP, InputOTPGroup, InputOTPSlot, InputOTPSeparator }