update schema to include timestamp

schema.graphqls

@@ -27,6 +27,7 @@ type ParkingStructure {
   spotsAvailable: Int!
   coordinates: Coordinates!
   address: String!
+  updatedTimeMs: Int!
 }
 
 type Route {
@@ -37,6 +38,7 @@ type Route {
   shuttles: [Shuttle!]
   polylineCoordinates: [Coordinates!]!
   color: String!
+  updatedTimeMs: Int!
 }
 
 type OrderedStop {
@@ -47,6 +49,7 @@ type OrderedStop {
   stop: Stop
   stopId: ID!
   systemId: ID!
+  updatedTimeMs: Int!
 }
 
 type Stop {
@@ -56,6 +59,7 @@ type Stop {
   coordinates: Coordinates!
   etas: [ETA!]
   orderedStops: [OrderedStop!]
+  updatedTimeMs: Int!
 }
 
 type Coordinates {
@@ -70,6 +74,7 @@ type ETA {
   shuttleId: ID!
   secondsRemaining: Float!
   systemId: ID!
+  updatedTimeMs: Int!
 }
 
 type Shuttle {
@@ -82,6 +87,7 @@ type Shuttle {
   etas: [ETA!]
   eta(forStopId: ID): ETA
   orientationInDegrees: Float!
+  updatedTimeMs: Int!
 }
 
 # Queries