feat: wire up clerk

+ Add convex provider with clerk
+ Add clerk provider
+ Add account page
+ Add login page
+ Add sign up page
+ Add clerk middleware
+ Add Navbar component

src/providers/index.tsx

@@ -0,0 +1,25 @@
+'use client';
+
+import { useAuth } from '@clerk/nextjs';
+import { ConvexReactClient } from 'convex/react';
+import { ConvexProviderWithClerk } from 'convex/react-clerk';
+import { ReactNode } from 'react';
+
+const CONVEX_URL = process.env.NEXT_PUBLIC_CONVEX_URL;
+
+if (CONVEX_URL === undefined) {
+  throw Error('NEXT_PUBLIC_CONVEX_URL is undefined');
+}
+
+const client = new ConvexReactClient(CONVEX_URL);
+
+export default function ConvexProvider({ children }: { children: ReactNode }) {
+  return (
+    <ConvexProviderWithClerk
+      client={client}
+      useAuth={useAuth}
+    >
+      {children}
+    </ConvexProviderWithClerk>
+  );
+}