Removable footer, compact styling for particle creator

frontend/src/app/services/footer.service.ts

@@ -0,0 +1,10 @@
+import {Injectable, signal} from '@angular/core';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class FooterService {
+
+  public hideFooter = signal<boolean>(false);
+
+}