Add "new-group" and "contacts" pages

- Style new group page
- Improve style in chat page

src/app/pages/chat/new-group/new-group-routing.module.ts

@@ -0,0 +1,21 @@
+import { NgModule } from '@angular/core';
+import { Routes, RouterModule } from '@angular/router';
+
+import { NewGroupPage } from './new-group.page';
+
+const routes: Routes = [
+  {
+    path: '',
+    component: NewGroupPage
+  },
+  {
+    path: 'contacts',
+    loadChildren: () => import('./contacts/contacts.module').then( m => m.ContactsPageModule)
+  }
+];
+
+@NgModule({
+  imports: [RouterModule.forChild(routes)],
+  exports: [RouterModule],
+})
+export class NewGroupPageRoutingModule {}