feat(desktop-modeler): document connection event

Closes camunda/camunda-modeler#5809

Author: barmac

docs/components/modeler/desktop-modeler/telemetry/telemetry.md

@@ -194,7 +194,7 @@ Example event:
 }
 ```
 
-## Task testing events
+### Task testing events
 
 Task testing events are sent when using the [task testing](../task-testing.md) feature:
 
@@ -212,3 +212,28 @@ Example task testing finished event:
   "incidentType": "JOB_NO_RETRIES"
 }
 ```
+
+### Connection event
+
+The `Connection Event` is sent in the following situations:
+
+- Modeler fails to connect to a cluster configured via [connection manager](../connect-to-camunda-8.md)
+- Modeler connects to a configured cluster
+
+The `Connection Event` has the following properties:
+
+- `success`: true or false
+- `targetType`: SaaS or Self-Managed
+- `isLocal`: true or false
+- `reason`: error reason or null
+
+Example connection event:
+
+```json
+{
+  "success": true,
+  "targetType": "Self-Managed",
+  "isLocal": true,
+  "reason": null
+}
+```

versioned_docs/version-8.8/components/modeler/desktop-modeler/telemetry/telemetry.md

@@ -194,7 +194,7 @@ Example event:
 }
 ```
 
-## Task testing events
+### Task testing events
 
 Task testing events are sent when using the [task testing](../task-testing.md) feature:
 
@@ -212,3 +212,28 @@ Example task testing finished event:
   "incidentType": "JOB_NO_RETRIES"
 }
 ```
+
+### Connection event
+
+The `Connection Event` is sent in the following situations:
+
+- Modeler fails to connect to a cluster configured via [connection manager](../connect-to-camunda-8.md)
+- Modeler connects to a configured cluster
+
+The `Connection Event` has the following properties:
+
+- `success`: true or false
+- `targetType`: SaaS or Self-Managed
+- `isLocal`: true or false
+- `reason`: error reason or null
+
+Example connection event:
+
+```json
+{
+  "success": true,
+  "targetType": "Self-Managed",
+  "isLocal": true,
+  "reason": null
+}
+```