Add utility method mxLoginWithAccessToken to login with existing access token (#7261)

src/@types/global.d.ts

@@ -100,6 +100,7 @@ declare global {
         mxOnRecaptchaLoaded?: () => void;
         electron?: Electron;
         mxSendSentryReport: (userText: string, issueUrl: string, error: Error) => Promise<void>;
+        mxLoginWithAccessToken: (hsUrl: string, accessToken: string) => Promise<void>;
     }
 
     interface DesktopCapturerSource {