Redirect first-time visitors to info page

Updated routing to use MainPage as the default route and added logic in App component to redirect users to the /info page on their first visit using sessionStorage.

src/app/app-routing-module.ts

@@ -2,9 +2,11 @@ import { NgModule } from '@angular/core';
 import { RouterModule, Routes } from '@angular/router';
 import { PocModelComponent } from './poc-model-component/poc-model-component';
 import { HomeComponent } from './home-component/home-component';
+import { MainPage } from './main-page/main-page';
 
 const routes: Routes = [
-  { path: '', component: HomeComponent, pathMatch: 'full' },
+  { path: '', component: MainPage, pathMatch: 'full' },
+  { path: 'info', component: HomeComponent },
   { path: 'poc-model', component: PocModelComponent },
   { path: '**', component: HomeComponent },
 ];