Add CustomEvent docs entry

Resolves #1031

docs/generated/protocol.json

@@ -5670,6 +5670,23 @@
           "valueDescription": "Vendor-provided event data. {} if event does not provide any data"
         }
       ]
+    },
+    {
+      "description": "Custom event emitted by `BroadcastCustomEvent`.",
+      "eventType": "CustomEvent",
+      "eventSubscription": "General",
+      "complexity": 1,
+      "rpcVersion": "1",
+      "deprecated": false,
+      "initialVersion": "5.0.0",
+      "category": "general",
+      "dataFields": [
+        {
+          "valueName": "eventData",
+          "valueType": "Object",
+          "valueDescription": "Custom event data"
+        }
+      ]
     }
   ]
 }

docs/generated/protocol.md

@@ -1304,6 +1304,7 @@ Subscription value to receive the `SceneItemTransformChanged` high-volume event.
 - [General Events](#general-events)
   - [ExitStarted](#exitstarted)
   - [VendorEvent](#vendorevent)
+  - [CustomEvent](#customevent)
 - [Config Events](#config-events)
   - [CurrentSceneCollectionChanging](#currentscenecollectionchanging)
   - [CurrentSceneCollectionChanged](#currentscenecollectionchanged)
@@ -1395,6 +1396,22 @@ If a plugin or script implements vendor requests or events, documentation is exp
 | eventType | String | Vendor-provided event typedef |
 | eventData | Object | Vendor-provided event data. {} if event does not provide any data |
 
+---
+
+### CustomEvent
+
+Custom event emitted by `BroadcastCustomEvent`.
+
+- Complexity Rating: `1/5`
+- Latest Supported RPC Version: `1`
+- Added in v5.0.0
+
+**Data Fields:**
+
+| Name | Type  | Description |
+| ---- | :---: | ----------- |
+| eventData | Object | Custom event data |
+
 ## Config Events
 
 ### CurrentSceneCollectionChanging

src/requesthandler/RequestHandler_General.cpp

@@ -102,6 +102,20 @@ RequestResult RequestHandler::GetStats(const Request &)
 	return RequestResult::Success(responseData);
 }
 
+/**
+ * Custom event emitted by `BroadcastCustomEvent`.
+ * 
+ * @dataField eventData | Object | Custom event data
+ *
+ * @eventType CustomEvent
+ * @eventSubscription General
+ * @complexity 1
+ * @rpcVersion -1
+ * @initialVersion 5.0.0
+ * @category general
+ * @api events
+ */
+
 /**
  * Broadcasts a `CustomEvent` to all WebSocket clients. Receivers are clients which are identified and subscribed.
  *