fix: technical debts left by the Sites, Authors and SEO slices, plus backend support for the new Sites and Authors pagination

api/handlers/media/mediaHandler.go

@@ -250,6 +250,19 @@ func (h *Handler) List(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, http.StatusOK, response)
 }
 
+func (h *Handler) Get(w http.ResponseWriter, r *http.Request) {
+	id, ok := parseImageId(w, r)
+	if !ok {
+		return
+	}
+	item, err := h.ListUseCase.Get(id)
+	if err != nil {
+		writeImageError(w, err)
+		return
+	}
+	writeJSON(w, http.StatusOK, toResponse(item))
+}
+
 func (h *Handler) Upload(w http.ResponseWriter, r *http.Request) {
 	userId, _ := claims.UserId(r)
 	input, closeFile, ok := upload.ReadImageInput(w, r, userId)