refactor: js plugin api

parsers/native/kemono/post_legacy.go

@@ -0,0 +1,16 @@
+package kemono
+
+type PostLegacy struct {
+	Props   Props    `json:"props"`
+	Results []Result `json:"results"`
+}
+
+type Props struct {
+	Count uint `json:"count"`
+	Limit uint `json:"limit"`
+}
+
+type Result struct {
+	ID    string `json:"id"`
+	Title string `json:"title"`
+}