added vercel.json

Author: KayvanShah1

frontend/vercel.json

@@ -0,0 +1,16 @@
+{
+	"$schema": "https://openapi.vercel.sh/vercel.json",
+	"framework": "nextjs",
+	"rewrites": [{ "source": "/api/:path*", "destination": "https://taskaza.onrender.com/:path*" }],
+	"redirects": [
+		{ "source": "/redoc", "destination": "https://taskaza.onrender.com/redoc", "permanent": false },
+		{ "source": "/docs", "destination": "https://taskaza.onrender.com/docs", "permanent": false }
+	],
+	"cleanUrls": true,
+	"headers": [
+		{
+			"source": "/(.*)\\.js",
+			"headers": [{ "key": "Cache-Control", "value": "public, max-age=31536000, immutable" }]
+		}
+	]
+}