fix: allow override of env setting on OAuth2Interceptor

Refacto app config service Allow override of env setting on OAuth2Interceptor by not inject directly httpClient in appConfigService Remove default lib service and component Fix isValidationErros in case value is null

projects/solidify-frontend/src/lib/auth/oauth2.service.ts

@@ -2,19 +2,18 @@ import {HttpClient, HttpHeaders, HttpParams} from "@angular/common/http";
 import {Inject, Injectable, NgZone, Optional} from "@angular/core";
 import {Observable, of, Subject, Subscription} from "rxjs";
 import {delay, filter, map, switchMap} from "rxjs/operators";
-import {OAuthErrorEvent, OAuthEvent, OAuthInfoEvent, OAuthSuccessEvent} from "./events";
-import {LoginOptions, OAuthStorage, TokenResponse} from "./types";
 import {DefaultSolidifyEnvironment} from "../environments/environment.solidify-defaults";
 import {ENVIRONMENT} from "../injectors";
+import {OAuthErrorEvent, OAuthEvent, OAuthInfoEvent, OAuthSuccessEvent} from "./events";
+import {LoginOptions, OAuthStorage, TokenResponse} from "./types";
 
-
-@Injectable({
-  providedIn: "root",
-})
 /**
  * Service for logging in and logging out with
  * OIDC and OAuth2. Supports code flow.
  */
+@Injectable({
+  providedIn: "root",
+})
 export class OAuth2Service {
 
   private eventsSubject: Subject<OAuthEvent> = new Subject<OAuthEvent>();