Add a docs page to explain NGINX Agent features

site/content/configuration/configure-nginx-agent-features.md

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+# Configure NGINX Agent Features
+
+## Overview
+
+This guide explains how to enable or disable NGINX Agent features. 
+
+## Before you begin
+
+Before you begin ensure:
+
+- NGINX Agent has been installed. 
+- Access to the NGINX Agent configuration file.
+
+
+## Features
+
+The following table details the NGINX Agent features available. 
+
+| Feature Name      | Description      |
+| ------------- | ------------- |
+| registration | Registering the NGINX Agent with the management plane.|
+| nginx-config-async | Enable the publishing and uploading of NGINX configurations from the management plane.|
+| metrics | Enable collecting of NGINX metrics.|
+| metrics-throttle | Batch metrics before sending.|
+| metrics-sender | Reports metrics over the gRPC connection.|
+| dataplane-status | Report the health of the NGINX Instance.|
+| process-watcher | Observe changes to the NGINX process.|
+| file-watcher | Observe changes to the NGINX configuration or any changes to files on disk.|
+| activity-events | Send NGINX or NGINX Agent related events to the management plane.|
+| agent-api | Enable the NGINX Agent REST API.|
+
+
+
+
+
+
+
+
+### Use Cases
+
+#### Enable metrics only
+1. **Access the NGINX Instance:** SSH to the virtual machine/server where NGINX Agent is running.
+```
+ssh user@your-nginx-instance
+```
+2. **Edit NGINX Agent configuration:** 
+```
+sudo vim /etc/nginx-agent/nginx-agent.conf
+```
+3. **Add Features section:** Add the following yaml to the end of the file:
+
+```
+features:
+  - metrics
+  - metrics-throttle
+  - dataplane-status
+``` 
+
+4. **Restart the NGINX Agent service:** Restart the NGINX Agent service to enable changes.
+
+
+