Trackscans now have a laptime that get's calculated on creation

ref #151

src/models/entities/TrackScan.ts

@@ -2,6 +2,8 @@ import {
   IsInt,
   IsNotEmpty,
 
+  IsNumber,
+
   IsPositive
 } from "class-validator";
 import { ChildEntity, Column, ManyToOne } from "typeorm";
@@ -59,6 +61,14 @@ export class TrackScan extends Scan {
   @IsInt()
   timestamp: number;
 
+  /**
+   * The scan's lap time.
+   * This simply get's calculated from the last lap time;
+   */
+  @Column()
+  @IsNumber()
+  lapTime: number;
+
   /**
    * Turns this entity into it's response class.
    */