chore: add changeset

Author: ElasticBottle

.changeset/popular-ravens-reflect.md

@@ -0,0 +1,23 @@
+---
+"thirdweb": minor
+---
+
+Add support for backend wallets.
+
+This is useful is you have a backend that is connected to an agent or what not that you want to have programmatic access to a wallet without managing private keys.
+
+Here's how you'd do it:
+
+```typescript
+const wallet = inAppWallet();
+const account = await wallet.connect({
+    strategy: "backend",
+    client: createThirdwebClient({
+        secretKey: "...",
+    }),
+    walletSecret: "...",
+  });
+console.log("account.address", account.address);
+```
+
+Note that `walletSecret` would simply be something that you generate and store to uniquely identify the given wallet created under the particular `client`.