Add Swagger integration documentation for layered web application

docs/en/solution-templates/layered-web-application/swagger-integration.md

@@ -0,0 +1,19 @@
+# Layered Solution: Swagger Integration
+
+```json
+//[doc-nav]
+{
+  "Previous": {
+    "Name": "Logging (with Serilog)",
+    "Path": "solution-templates/layered-web-application/logging"
+  },
+  "Next": {
+    "Name": "Multi-Tenancy",
+    "Path": "solution-templates/layered-web-application/multi-tenancy"
+  }
+}
+```
+
+[Swagger](https://swagger.io/) is a tool that helps to create, document, and consume RESTful web services. It provides a user interface to interact with the APIs and also a way to generate client SDKs for the APIs.
+
+In the [Swagger Integration](../../framework/api-development/swagger.md) document, you can find general information about Swagger integration with ABP Framework.