seats are now selectable. returns list of selected seats. colors might not work anymore. 😢😢

src/app/selected-seats.service.ts

@@ -0,0 +1,30 @@
+import {Injectable} from '@angular/core';
+import {Sitzplatz} from '@infinimotion/model-frontend';
+
+@Injectable({
+  providedIn: 'root',
+})
+export class SelectedSeatsService {
+  private selectedSeatsList: Sitzplatz[] = [];
+
+  pushSelectedSeat(selectedSeat: Sitzplatz): void {
+    this.selectedSeatsList.push(selectedSeat);
+    //console.log("Added" + selectedSeat);
+    //console.log(this.selectedSeatsList);
+  }
+
+  removeSelectedSeat(selectedSeat: Sitzplatz): void {
+    let removeId = this.selectedSeatsList.indexOf(selectedSeat);
+
+    if(removeId !== -1) {
+      this.selectedSeatsList.splice(removeId, 1)
+    }
+    //console.log("Removed" + selectedSeat)
+    //console.log(this.selectedSeatsList);
+  }
+
+  getSelectedSeatsList(): Sitzplatz[] {
+    return this.selectedSeatsList;
+  }
+
+}