DLP template missing

There seems to be a step missing in the [DLP lab](https://github.com/GoogleCloudPlatform/dataplex-labs/blob/main/data-mesh-banking-labs/lab5-data-classification/README.md) that explains how to copy the template.

```
export PROJECT_ID=$(gcloud config get-value project)
gsutil cp gs://${PROJECT_ID}_dataplex_process/common/tagmanager-1.0-SNAPSHOT.jar /tmp/
java -cp /tmp/tagmanager-1.0-SNAPSHOT.jar com.google.cloud.dataplex.setup.CreateDLPInspectionTemplate ${PROJECT_ID} global marsbank_dlp_template
```

Open data-mesh-banking-labs/lab5-data-classification/README.md and find the DLP lab setup steps. Add the missing explanation for copying the template, using the gcloud, gsutil, and Java commands shown in the issue; the lab is done when a reader can follow the README to create the DLP inspection template.

Written by the indexing model from the issue text.