refactor: introduce bindThis decorator to bind this automaticaly

packages/backend/src/core/WebfingerService.ts

@@ -14,6 +14,7 @@ type IWebFinger = {
 	links: ILink[];
 	subject: string;
 };
+import { bindThis } from '@/decorators.js';
 
 @Injectable()
 export class WebfingerService {
@@ -25,12 +26,14 @@ export class WebfingerService {
 	) {
 	}
 
+	@bindThis
 	public async webfinger(query: string): Promise<IWebFinger> {
 		const url = this.genUrl(query);
 
 		return await this.httpRequestService.getJson(url, 'application/jrd+json, application/json') as IWebFinger;
 	}
 
+	@bindThis
 	private genUrl(query: string): string {
 		if (query.match(/^https?:\/\//)) {
 			const u = new URL(query);