Add D&D item event extractor

internal/modules/dnd/extract/itemevents/model.go

@@ -0,0 +1,19 @@
+package itemevents
+
+type extractionResponse struct {
+	Events []itemEventResponse `json:"events"`
+}
+
+type itemEventResponse struct {
+	Name       string                       `json:"name"`
+	Kind       string                       `json:"kind"`
+	Quantity   *int                         `json:"quantity,omitempty"`
+	From       string                       `json:"from,omitempty"`
+	To         string                       `json:"to,omitempty"`
+	SourceRefs []itemEventSourceRefResponse `json:"source_refs"`
+}
+
+type itemEventSourceRefResponse struct {
+	StartSegment int `json:"start_segment"`
+	EndSegment   int `json:"end_segment"`
+}