doc: Support document (#1388)

Create a page that explains how to contact NGINX for support.

site/content/support.md

@@ -0,0 +1,18 @@
+---
+title: "Support"
+draft: false
+weight: 1100
+toc: true
+tags: [ "docs" ]
+docs: "DOCS-OOO"
+---
+
+NGINX Gateway Fabric adheres to the support policy detailed at [nginx.com/support](https://nginx.com/support).
+
+**Support Channels:**
+
+- If you experience issues with NGINX Gateway Fabric, please [open an issue](https://github.com/nginxinc/nginx-gateway-fabric/issues/new?assignees=&labels=&projects=&template=bug_report.md&title=) in GitHub.
+
+- If you have any suggestions or enhancement requests, please [open an idea](https://github.com/nginxinc/nginx-gateway-fabric/discussions/categories/ideas) on GitHub discussions.
+
+- You can contact us directly, by sending an email to [[email protected]](mailto:[email protected]) or on the [NGINX Community Slack](https://nginxcommunity.slack.com/channels/nginx-gateway-fabric), in the #nginx-gateway-fabric channel.