Chore: Upgrade to Angular v18

Chore: Upgrade to Python 3.12
Chore: Upgrade to psycopg3

bookie/src/app/app.component.ts

@@ -1,9 +1,14 @@
 import { Component } from '@angular/core';
+import { RouterOutlet } from '@angular/router';
+
+import { NavBarComponent } from './nav-bar/nav-bar.component';
 
 @Component({
   selector: 'app-root',
   templateUrl: './app.component.html',
   styleUrls: ['./app.component.css'],
+  standalone: true,
+  imports: [NavBarComponent, RouterOutlet],
 })
 export class AppComponent {
   title = 'bookie';