Adding Seat plan component and database tables

software/src/data/models/locations/seatGroupModel.ts

@@ -0,0 +1,9 @@
+import { SeatRowModel } from "./seatRowModel"
+
+export class SeatGroupModel {
+  name: string
+  surcharge: number
+  standingArea: Boolean
+  capacity: number
+  seatRows: Array<SeatRowModel>
+}