Add Azure deployment examples and enhance configuration management

- Update .gitignore to exclude Terraform files
- Enhance README with Azure deployment instructions
- Refactor publish.sh to use a container for changelog parsing
- Add Azure example files including Terraform configurations
- Create cloud-init templates for PKI and default configurations
- Implement workload VM setup for testing routing

examples/azure/routes.tf

@@ -0,0 +1,25 @@
+locals {
+  remote_cidr_list = [for c in split(",", var.remote_cidrs) : trimspace(c) if trimspace(c) != ""]
+}
+
+resource "azurerm_route_table" "router" {
+  name                = "rt-${var.name}"
+  resource_group_name = azurerm_resource_group.this.name
+  location            = azurerm_resource_group.this.location
+}
+
+resource "azurerm_route" "to_remote" {
+  for_each = toset(local.remote_cidr_list)
+
+  name                   = "to-${replace(each.value, "/", "-")}"
+  resource_group_name    = azurerm_resource_group.this.name
+  route_table_name       = azurerm_route_table.router.name
+  address_prefix         = each.value
+  next_hop_type          = "VirtualAppliance"
+  next_hop_in_ip_address = azurerm_network_interface.int.private_ip_address
+}
+
+resource "azurerm_subnet_route_table_association" "workload" {
+  subnet_id      = azurerm_subnet.workload.id
+  route_table_id = azurerm_route_table.router.id
+}