feat: providers working

Still need to flesh out real demo components and handle the case where there isn't a solana provider injected

src/components/SolanaWalletDemo.tsx

@@ -0,0 +1,16 @@
+import * as React from "react";
+import { useWallet } from "@solana/wallet-adapter-react";
+
+export function SolanaWalletDemo() {
+  const { publicKey } = useWallet();
+  const solanaAddress = publicKey?.toBase58() ?? "";
+  return (
+    <div style={{ padding: 16, background: "#f6f6f6", borderRadius: 8, margin: 16 }}>
+      <h3>Solana Wallet Demo</h3>
+      <div>
+        <strong>Solana Address:</strong>
+        <span style={{ marginLeft: 8 }}>{solanaAddress || "Not connected"}</span>
+      </div>
+    </div>
+  );
+}