az group: add page (#8698)

pages/common/az-group.md

@@ -0,0 +1,21 @@
+# az group
+
+> Manage resource groups and template deployments.
+> Part of `azure-cli`.
+> More information: <https://docs.microsoft.com/cli/azure/group>.
+
+- Create a new resource group:
+
+`az group create --name {{name}} --location {{location}}`
+
+- Check if a resource group exists:
+
+`az group exists --name {{name}}`
+
+- Delete a resource group:
+
+`az group delete --name {{name}}`
+
+- Wait until a condition of the resource group is met:
+
+`az group wait --name {{name}} --{{created|deleted|exists|updated}}`