feat(dsm): Add Live Messages (v2) documentation for Data Streams Monitoring

Author: gitstevenpham

content/en/data_streams/live_messages_sequel.md

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+---
+title: Live Messages (v2)
+---
+
+Live Messages allows you to view messages from specific offsets within Kafka. Inspecting these live messages can be crucial when troubleshooting issues related to specific services or data streams.
+
+(Insert Screenshot here)
+
+## Setup
+
+To configure Live Messages, identify an appropriate agent to connect to your Kafka cluster and enable the Kafka consumer integration.
+
+### Selecting an Agent
+
+If you self-host Kafka, set up Live Messages on your Kafka broker’s agent. Otherwise, choose any agent your producer or consumer services communicate with that has access to your Kafka cluster.
+
+### Step-by-Step Guide
+
+Perform all steps below on the same agent:
+
+#### 1. Verify Agent Version
+
+Ensure your agent is running version `7.69.0` or newer.
+
+#### 2. Enable [Remote Configuration][2]
+
+Confirm Remote Configuration is enabled for your agent, which is typically active by default. You can verify this on the [Fleet Automation][3] page.
+
+#### 3. Configure Kafka Consumer Integration
+
+Create or update the Kafka consumer configuration file at `[agent config directory]/kafka_consumer.d/conf.yaml` with the following example:
+
+```yaml
+init_config:
+
+instances:
+  - kafka_connect_str: kafka:29092 (use your own kafka string)
+    monitor_unlisted_consumer_groups: true
+    tags:
+      - env:staging
+```
+
+Ensure you correctly tag your clusters to facilitate filtering and identification.
+
+For more comprehensive instructions and advanced configuration options, see the [Kafka consumer integration documentation][4].
+
+#### 4. Verify Setup
+
+Check your agent logs for entries containing `kafka_consumer` to confirm the integration is active.
+
+Also, verify Datadog is receiving data by examining the metric `kafka.broker_offset` in the metrics explorer, filtering by your configured topics.
+
+
+### Required Permission: "Data Streams Monitoring Capture Messages"
+
+You must have the `Data Streams Monitoring Capture Messages` permission enabled. You can verify or enable this permission by modifying an existing role or creating a new one on the [Roles][1] page.
+
+If you don't have permission to modify roles, you will have to ask an admin.
+
+### Usage
+
+(TBD)
+
+### Additional details
+
+#### Message storage and access
+
+(TBD)
+
+#### Sensitive information redaction
+
+(TBD)
+
+#### SSL encryption on Kafka
+
+
+(TBD)
+
+[1]: https://app.datadoghq.com/organization-settings/roles
+[2]: /agent/remote_config
+[3]: https://app.datadoghq.com/fleet
+[4]: /integrations/kafka-consumer/?tab=host#setup