Add new template (#1578)

## Changes
Add a new hidden experimental template 

## Tests
Tested manually

cmd/bundle/init.go

@@ -49,6 +49,12 @@ var nativeTemplates = []nativeTemplate{
 		description: "The Databricks MLOps Stacks template (github.com/databricks/mlops-stacks)",
 		aliases:     []string{"mlops-stack"},
 	},
+	{
+		name:        "default-pydabs",
+		gitUrl:      "https://databricks.github.io/workflows-authoring-toolkit/pydabs-template.git",
+		hidden:      true,
+		description: "The default PyDABs template",
+	},
 	{
 		name:        customTemplate,
 		description: "Bring your own template",