Add assets.json for databricks 2022-04-01-preview test recordings (Azure#22459)

Author: mikekistler

specification/databricks/resource-manager/Microsoft.Databricks/preview/2022-04-01-preview/scenarios/assets.json

@@ -0,0 +1,6 @@
+{
+  "AssetsRepo": "Azure/azure-sdk-assets",
+  "AssetsRepoPrefixPath": "apitest",
+  "TagPrefix": "apitest/databricks/resource-manager",
+  "Tag": "apitest/databricks/resource-manager_2f1f7fc0aa"
+}