virtual network manager - initial commit (#226)

* initial commit
---------

Co-authored-by: Michael Bender <michael.bender@microsoft.com>

quickstart/101-virtual-network-manager-create-mesh/variables.tf

@@ -0,0 +1,11 @@
+variable "resource_group_location" {
+  type        = string
+  default     = "eastus"
+  description = "Location of the resource group."
+}
+
+variable "resource_group_name_prefix" {
+  type        = string
+  description = "Prefix of the resource group name that's combined with a random ID so name is unique in your Azure subscription."
+  default     = "rg"
+}