Add route, controller, db operations, and validation for aggregate monitor stats

Server/validation/joi.js

@@ -201,6 +201,13 @@ const pauseMonitorParamValidation = joi.object({
   monitorId: joi.string().required(),
 });
 
+const getMonitorAggregateStatsParamValidation = joi.object({
+  monitorId: joi.string().required(),
+});
+const getMonitorAggregateStatsQueryValidation = joi.object({
+  dateRange: joi.string().valid("day", "week", "month"),
+});
+
 //****************************************
 // Alerts
 //****************************************
@@ -357,6 +364,8 @@ module.exports = {
   getMonitorByIdQueryValidation,
   getMonitorsByTeamIdValidation,
   getMonitorsByTeamIdQueryValidation,
+  getMonitorAggregateStatsParamValidation,
+  getMonitorAggregateStatsQueryValidation,
   editMonitorBodyValidation,
   pauseMonitorParamValidation,
   editUserParamValidation,