restore resources group_create example

.gitattributes

@@ -4,5 +4,5 @@ Cargo.lock merge=binary
 
 # Use unix line endings everywhere, even on Windows
 * text=auto eol=lf
-services/mgmt/**/*.rs linguist-generated=true
+services/mgmt/**/src/**/*.rs linguist-generated=true
 services/mgmt/**/Cargo.toml linguist-generated=true

services/mgmt/resources/examples/group_create.rs

@@ -0,0 +1,39 @@
+/*
+Create a resource group, similar to:
+az group create --name $RESOURCE_GROUP_NAME --location $RESOURCE_GROUP_LOCATION
+
+export RESOURCE_GROUP_NAME=azuresdkforrust
+export RESOURCE_GROUP_LOCATION=southcentralus
+cargo run --package azure_mgmt_resources --example group_create
+*/
+
+use azure_identity::token_credentials::AzureCliCredential;
+use azure_mgmt_resources::models::ResourceGroup;
+use std::env;
+use std::sync::Arc;
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let credential = Arc::new(AzureCliCredential {});
+    let subscription_id = &AzureCliCredential::get_subscription()?;
+    let resource_group_name = &env::var("RESOURCE_GROUP_NAME").map_err(|_| "RESOURCE_GROUP_NAME required")?;
+    let resource_group_location = env::var("RESOURCE_GROUP_LOCATION").map_err(|_| "RESOURCE_GROUP_LOCATION required")?;
+    let client = azure_mgmt_resources::ClientBuilder::new(credential).build();
+
+    let group = ResourceGroup {
+        id: None,
+        name: None,
+        type_: None,
+        properties: None,
+        location: resource_group_location,
+        managed_by: None,
+        tags: None,
+    };
+    let group_created = client
+        .resource_groups()
+        .create_or_update(resource_group_name, group, subscription_id)
+        .into_future()
+        .await?;
+    println!("group created: {:#?}", group_created);
+    Ok(())
+}