ModalConfigOptions
type ModalConfigOptions = {  auth?: {    loginOptional?: boolean;    onLogin?: (token: string) => void;    onLogout?: () => void;  };  modalSize: "wide" | "compact";  onConnect?: () => void;  privacyPolicyUrl?: string;  showThirdwebBranding?: boolean;  termsOfServiceUrl?: string;  title?: string;  titleIconUrl?: string;};
The object contains the following properties to customize the authentication
- loginOptional- specify whether signing in is optional or not. By default it is- false( Sign in is required ) if- authConfigis set on- ThirdwebProvider
- onLogin- Callback to be called after user signs in with their wallet
- onLogout- Callback to be called after user signs out
type auth = {  loginOptional?: boolean;  onLogin?: (token: string) => void;  onLogout?: () => void;};
 Set the size of the modal - compact  or wide  on desktop
 Modal size is always compact  on mobile
 By default it is "wide"  for desktop.
type modalSize = "wide" | "compact";
URL of the "privacy policy" page
If provided, Modal will show a Privacy Policy message at the bottom with below link
type privacyPolicyUrl = string;
By default the ConnectWallet Modal shows "powered by thirdweb" branding at the bottom of the modal.
 If you want to hide the branding, set this to false
type showThirdwebBranding = boolean;
URL of the "terms of service" page
If provided, Modal will show a Terms of Service message at the bottom with below link
type termsOfServiceUrl = string;
Set the theme for the Modal
 By default it is set to "dark" if theme  is not set on ThirdwebProvider 
If a theme  is set on ThirdwebProvider  then that theme will be used by default
 theme can be set to either "dark"  or "light"  or a custom theme object. You can also import lightTheme  or darkTheme  functions from @thirdweb-dev/react  to use the default themes as base and overrides parts of it.
import { lightTheme } from "@thirdweb-dev/react";const customTheme = lightTheme({  colors: {    modalBg: "red",  },});
Title of the Modal
type title = string;
Replace the thirdweb icon next to modalTitle and set your own iconUrl
type titleIconUrl = string;
 Customize the welcome screen. This is only applicable when modalSize  is set to "wide".
On "wide" Modal size, a welcome screen is shown on the right side of the modal.
This screen can be customized in two ways
1. Customize Metadata and Image
const welcomeScreen = {  title: "your title",  subtitle: "your subtitle",  img: {    src: "https://your-image-url.png",    width: 300,    height: 50,  },};
2. Render Custom Component
const welcomeScreen = () => {  return <YourCustomComponent />;};