feat: NCWF-5/6/7/8/9 chess analysis page and engine integration (#11)

Co-authored-by: Janis Eccarius <eccariusjanis@gmail.com>
Reviewed-on: #11

src/app/services/tournament-server.service.ts

@@ -0,0 +1,31 @@
+import { Injectable, inject } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { Observable } from 'rxjs';
+
+export interface ExternalTournamentServer {
+  id: string;
+  label: string;
+  url: string;
+}
+
+export interface ExternalTournamentServerList {
+  servers: ExternalTournamentServer[];
+}
+
+@Injectable({ providedIn: 'root' })
+export class TournamentServerService {
+  private readonly http = inject(HttpClient);
+  private readonly base = '/api/tournament/servers';
+
+  list(): Observable<ExternalTournamentServerList> {
+    return this.http.get<ExternalTournamentServerList>(this.base);
+  }
+
+  register(label: string, url: string): Observable<ExternalTournamentServer> {
+    return this.http.post<ExternalTournamentServer>(this.base, { label, url });
+  }
+
+  remove(id: string): Observable<void> {
+    return this.http.delete<void>(`${this.base}/${id}`);
+  }
+}