feat(ddm): Document ddm alerts and dashboards + sample rate

src/docs/delightful-developer-metrics/sending-metrics-abstraction.mdx

@@ -27,12 +27,6 @@ To learn more about `MetricsBackend`, visit [Internal Metrics](/services/metrics
 
 ## Using the `MetricsBackend`
 
-<Alert title="Warning" level="warning">
-
-In order to slowly roll out the new metrics extraction, we have designed an allow list mechanism that will forward metrics to DDM only if the metric name is put in the allow list. You can view and modify the allow list [here](https://github.com/getsentry/getsentry/blob/27dc1c77551276661ca17913abb96de4f7d14284/getsentry/conf/settings/prod.py#L341)
-
-</Alert>
-
 To use the metrics backend you will first have to import it:
 
 ```python
@@ -79,6 +73,12 @@ with metrics.timer("my_func_speed"):
 	my_func()
 ```
 
+<Alert title="Warning" level="warning">
+
+The current metrics sample rate is 5% with the goal of getting to 100% soon.
+
+</Alert>
+
 
 
 ## Details about the `MetricsBackend`

src/docs/delightful-developer-metrics/sending-metrics-sdk.mdx

@@ -84,6 +84,12 @@ def my_function():
     pass
 ```
 
+<Alert title="Warning" level="warning">
+
+The current metrics sample rate is 5% with the goal of getting to 100% soon.
+
+</Alert>
+
 <Alert title="Note" level="note">
 As of now, only the Python SDK is supporting the new metrics features but we are working on supporting metrics in the JavaScript and Rust SDKs next.
 </Alert>

src/docs/delightful-developer-metrics/ui.mdx

@@ -28,4 +28,14 @@ The UI is quite straightforward. You will see an option to add a widget, and eac
 
 You will also be able to **save your scratchpad**. This means that Sentry will store the representation of the scratchpad in your local storage. This allows you to maintain multiple scratchpads during an exploration.
 
+## Dashboards and Alerts
+
+You can alert on custom metrics. As always, you can create these alerts either from the DDM page or by using the Alerts Wizard.
+
+DDM also plays nicely with Dashboards. You can plot custom metrics either in DDM and then later save them to a dashboard or go through the Dashboards directly.
+
+![DDM Dashboards and Alerts](/images/ddm-dashboards-alers.png)
+
+
+
 ## 🙏 Now have fun and don’t forget to give us feedback on [GitHub](https://github.com/getsentry/sentry/discussions/58584)