refactor: load npm config lazily and add the --global flag

the `--global` flag makes this work in workspaces where NPM would otherwise print an error that it's not supported.

Author: rigor789

lib/services/npm-config-service.ts

@@ -7,18 +7,16 @@ import { cache } from "../common/decorators";
 export class NpmConfigService implements INpmConfigService {
 	private config: IDictionary<any> = {};
 
-	constructor() {
+	public getConfig(): IDictionary<any> {
 		this.readConfig();
-	}
 
-	public getConfig(): IDictionary<any> {
 		return this.config;
 	}
 
 	@cache()
 	private readConfig(): void {
 		try {
-			const res = execSync("npm config list --json");
+			const res = execSync("npm config list --json --global");
 			// const data: any = npmconfig.read();
 			const data: Record<string, any> = JSON.parse(res.toString());