Add integration article to Azure API management (#1503)

* Add integration article to Azure API management

Fixes #1303

* Reorder APIM page to end of integrations list

Also add Learn More button

daprdocs/content/en/developing-applications/integrations/azure-api-management.md

@@ -0,0 +1,11 @@
+---
+type: docs
+title: "Dapr integration policies for Azure API Management"
+linkTitle: "Azure API Management"
+description: "Publish APIs for Dapr services and components through Azure API Management policies"
+weight: 6000
+---
+
+Azure API Management (APIM) is a way to create consistent and modern API gateways for back-end services, including as those built with Dapr. Dapr support can be enabled in self-hosted API Management gateways to allow them to forward requests to Dapr services, send messages to Dapr Pub/Sub topics, or trigger Dapr output bindings. For more information, read the guide on [API Management Dapr Integration policies](https://docs.microsoft.com/en-us/azure/api-management/api-management-dapr-policies) and try out the [Dapr & Azure API Management Integration Demo](https://github.com/dapr/samples/tree/master/dapr-apim-integration).
+
+{{< button text="Learn more" link="https://docs.microsoft.com/en-us/azure/api-management/api-management-dapr-policies" >}}