refactor: reorganize component files and update import paths; add PsItem and PsProduct interfaces

client/src/app/services/platform.service.ts

@@ -0,0 +1,32 @@
+import {inject, Injectable} from '@angular/core';
+import {HttpClient} from '@angular/common/http';
+import {Observable} from 'rxjs';
+import {Platform} from '../interfaces/platform';
+import {CrudService} from './crud.service';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class PlatformService implements CrudService<Platform> {
+  private readonly http = inject(HttpClient);
+  private readonly BASE_URL = 'http://localhost:3000/api/app/platforms';
+
+  getAll(): Observable<Platform[]> {
+    return this.http.get<Platform[]>(this.BASE_URL, {withCredentials: true});
+  }
+
+  add(item: Platform): Observable<Platform> {
+    console.log('Adding platform:', item);
+    return this.http.post<Platform>(this.BASE_URL, item, {withCredentials: true});
+  }
+
+  update(id: string | number, item: Platform): Observable<Platform> {
+    console.log('Updating platform:', id, item);
+    return this.http.put<Platform>(`${this.BASE_URL}/${id}`, item, {withCredentials: true});
+  }
+
+  delete(id: string | number): Observable<void> {
+    console.log('Deleting platform:', id);
+    return this.http.delete<void>(`${this.BASE_URL}/${id}`, {withCredentials: true});
+  }
+}