ingest: add wire format for incoming messages

twitch/eventsub.go

@@ -0,0 +1,13 @@
+package twitch
+
+// EventSub is the wire format of incoming payloads from Twitch EventSub.
+type EventSub[Event any] struct {
+	// Subscription is fields relating to the EventSub subscription itself.
+	Subscription Subscription `json:"subscription"`
+	// Event is the event payload.
+	Event Event `json:"event"`
+}
+
+// Subscription is the fields of an EventSub subscription
+// which are relevant to Kaiyan.
+type Subscription struct{}