docs: add buf disclaimer for ts (#4773)

Add buf.build login info.

Author: Olshansk

docs/versioned_docs/version-v29/04-clients/02-typescript.md

@@ -41,6 +41,23 @@ Run a command to start your blockchain node:
 ignite chain serve -r
 ```
 
+### Typescript Generation Rate Limits
+
+To avoid hitting [buf.build](https://buf.build/) rate limits, make sure to
+
+1. Create an account at [buf.build](https://buf.build/)
+2. Install the buf plugin:
+
+    ```bash
+    brew install bufbuild/buf/buf
+    ```
+
+3. Login in your terminal: 
+
+    ```bash
+    buf registry login
+    ```
+
 ## Setting up a TypeScript frontend client
 
 The best way to get started building with the TypeScript client is by using