feat: 공용 Button 컴포넌트 구현

Author: yewonJin

frontend/src/components/commons/button/index.tsx

@@ -0,0 +1,21 @@
+import { cn } from "@/lib/utils";
+
+interface ButtonProps {
+  className?: string;
+  onClick?: () => void;
+  children?: React.ReactNode;
+}
+
+export default function Button({ className, onClick, children }: ButtonProps) {
+  return (
+    <button
+      onClick={onClick}
+      className={cn(
+        "rounded-md px-6 py-2 shadow-md transition-colors",
+        className,
+      )}
+    >
+      {children}
+    </button>
+  );
+}