perf: provide twitter service as singleton

src/app/features/home/services/twitter.service.ts

@@ -4,7 +4,9 @@ import {WINDOW} from "@app/app.module";
 import {TwitterMetadata} from "@app/features/home/models/twitter-metadata.model";
 import {Observable} from "rxjs";
 
-@Injectable()
+@Injectable({
+  providedIn: "root",
+})
 export class TwitterService {
   private readonly _TWITTER_SCRIPT_ID: string = "twitter-wjs";
   private readonly _TWITTER_WIDGET_URL: string = "https://platform.twitter.com/widgets.js";