fix(seo): add RouterLinkWithHref imports + default social media fields

- Import RouterLinkWithHref in footer and events components (required for queryParams binding on <a>)
- Add social media fields to DEFAULT_CONFIG in station-config.service.ts

src/app/events/events.component.ts

@@ -1,5 +1,6 @@
 import { Component, inject } from '@angular/core';
 import { AsyncPipe, DatePipe, NgFor } from '@angular/common';
+import { RouterLinkWithHref } from '@angular/router';
 import { map, Observable, startWith } from 'rxjs';
 
 import { EventService } from '../services/event.service';
@@ -14,7 +15,7 @@ interface EventsState {
 @Component({
   selector: 'app-events',
   standalone: true,
-  imports: [AsyncPipe, DatePipe, NgFor],
+  imports: [AsyncPipe, DatePipe, NgFor, RouterLinkWithHref],
   templateUrl: './events.component.html',
   styleUrl: './events.component.scss',
 })