Add D&D enemy event extractor

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

@@ -0,0 +1,16 @@
+package enemyevents
+
+type extractionResponse struct {
+	Events []enemyEventResponse `json:"events"`
+}
+
+type enemyEventResponse struct {
+	Name       string                   `json:"name"`
+	Kind       string                   `json:"kind"`
+	SourceRefs []enemySourceRefResponse `json:"source_refs"`
+}
+
+type enemySourceRefResponse struct {
+	StartUnitID int `json:"start_unit_id"`
+	EndUnitID   int `json:"end_unit_id"`
+}