feat: Implement Convex authentication including sign-in/sign-up UI, Convex client provider, and backend auth functions.

app/ConvexClientProvider.tsx

@@ -0,0 +1,19 @@
+"use client";
+
+import { ConvexAuthNextjsProvider } from "@convex-dev/auth/nextjs";
+import { ConvexReactClient } from "convex/react";
+import { ReactNode } from "react";
+
+const convex = new ConvexReactClient(process.env.NEXT_PUBLIC_CONVEX_URL!);
+
+export default function ConvexClientProvider({
+    children,
+}: {
+    children: ReactNode;
+}) {
+    return (
+        <ConvexAuthNextjsProvider client={convex}>
+            {children}
+        </ConvexAuthNextjsProvider>
+    );
+}