add tracked since to the schema

src/common/schema/player-schema.ts

@@ -25,6 +25,11 @@ export interface IPlayer extends Document {
    */
   rawPlayer: ScoreSaberPlayer;
 
+  /**
+   * The first time the player was tracked
+   */
+  trackedSince: Date;
+
   /**
    * Gets when this player was last tracked.
    */
@@ -62,6 +67,7 @@ const PlayerSchema = new Schema<IPlayer>({
   lastTracked: { type: Date, default: new Date(), required: false },
   rawPlayer: { type: Object, required: false },
   statisticHistory: { type: Map, default: () => new Map(), required: false },
+  trackedSince: { type: Date, default: new Date(), required: false },
 });
 
 PlayerSchema.methods.getLastTracked = function (): Date {