Add nodejs example

examples/node/.gitignore

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+node_modules
+src/main.js
+.env.*

examples/node/README.md

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+# Viam SDK Quickstart - Node
+
+This example demonstrates how to connect to a machine using Node.js.
+
+## Usage
+
+You must have a `.env` file in this directory with the following connection info which can be easily found in the TypeScript code sample for your machine.
+
+```
+HOST="<HOST>"
+API_KEY_ID="<API_KEY_ID>"
+API_KEY="<API_KEY>"
+```
+
+Installing will build the TypeScript SDK, then you can run the example using Vite.
+
+```
+cd examples/node
+npm install
+npm start
+```
+
+Edit `src/main.ts` to change the machine logic being run.
+
+## Configuration
+
+Using Viam's TypeScript SDK with Node.js requires some configurations. They are outlined below. Copying this project as a template is a good approach given the dependencies and polyfills requried. In the future, we hope to minimize the work neeed to get started here.
+
+### Dependencies
+
+The following direct dependencies are required:
+
+- @connectrpc/connect-node
+- node-datachannel
+
+In addition, polyfills and a node specific gRPC Transport are provided in `main.ts`.
+
+#### `main.ts`
+
+The `main.ts` file was updated to include the following polyfills and updates:
+
+- WebRTC Polyfills:
+
+  ```js
+import wrtc = require('node-datachannel/polyfill');
+for (const key in wrtc) {
+  (global as any)[key] = (wrtc as any)[key];
+}
+  ```
+
+- GRPC connection configuration
+  ```js
+import VIAM = require('@viamrobotics/sdk');
+globalThis.VIAM = {
+  // @ts-ignore
+  GRPC_TRANSPORT_FACTORY: (opts: any) =>
+    connectNode.createGrpcTransport({ httpVersion: '2', ...opts }),
+};
+  ```