Implement rate limiting and enhance authentication flow

- Added rate limiting configuration for authentication endpoints, allowing customizable request limits via environment variables.
- Updated authentication flow to utilize HttpRequest for cookie management, ensuring secure handling of refresh tokens.
- Introduced a new endpoint to retrieve user subscription details.
- Enhanced the handling of Telegram bot token validation to prevent errors with empty tokens.
- Updated the application to serialize enums as strings for better documentation and compatibility with TypeScript.
- Improved test coverage for new features and adjustments in command handlers.

frontend/src/shared/ui/input.tsx

@@ -0,0 +1,17 @@
+import { type InputHTMLAttributes, forwardRef } from 'react'
+import { cn } from '@/shared/lib/cn'
+
+export const Input = forwardRef<HTMLInputElement, InputHTMLAttributes<HTMLInputElement>>(
+  ({ className, type, ...props }, ref) => (
+    <input
+      type={type}
+      className={cn(
+        'flex h-10 w-full rounded-md border border-border bg-transparent px-3 py-2 text-sm outline-none transition-colors placeholder:text-muted-foreground focus-visible:ring-2 focus-visible:ring-primary/50 disabled:cursor-not-allowed disabled:opacity-50',
+        className,
+      )}
+      ref={ref}
+      {...props}
+    />
+  ),
+)
+Input.displayName = 'Input'