feat: enhance superadmin dashboard overview

backend/app/http/super/v1/contents.go

@@ -50,6 +50,20 @@ func (c *contents) ListTenantContents(ctx fiber.Ctx, tenantID int64, filter *dto
 	return services.Super.ListContents(ctx, filter)
 }
 
+// Content statistics
+//
+// @Router /super/v1/contents/statistics [get]
+// @Summary Content statistics
+// @Description Content statistics
+// @Tags Content
+// @Accept json
+// @Produce json
+// @Success 200 {object} dto.SuperContentStatisticsResponse
+// @Bind filter query
+func (c *contents) Statistics(ctx fiber.Ctx, filter *dto.SuperContentStatisticsFilter) (*dto.SuperContentStatisticsResponse, error) {
+	return services.Super.ContentStatistics(ctx, filter)
+}
+
 // Update content status
 //
 // @Router /super/v1/tenants/:tenantID<int>/contents/:contentID<int>/status [patch]