A new `fields` option is now available across all
[logging plugins](https://zuplo.com/docs/articles/logging). This addition
enables you to append arbitrary custom fields to each log entry, providing
additional context and information in your logs.

For example, using our Google Cloud Logging plugin:

```javascript
import {
  RuntimeExtensions,
  GoogleCloudLoggingPlugin,
  environment,
} from "@zuplo/runtime";

export function runtimeInit(runtime: RuntimeExtensions) {
  runtime.addPlugin(
    new GoogleCloudLoggingPlugin({
      logName: "projects/my-project/logs/my-api",
      serviceAccountJson: environment.GCP_SERVICE_ACCOUNT,
      fields: {
        myCustomField: "value",
        anotherCustomField: "value2",
      },
    }),
  );
}
```

You can use this feature to include relevant metadata, application-specific
details, or contextual information that may be useful for debugging or analysis
purposes.