Chore: Upgrade to Angular v18

Chore: Upgrade to Python 3.12
Chore: Upgrade to psycopg3

bookie/src/app/roles/role-list.resolver.ts

@@ -0,0 +1,9 @@
+import { inject } from '@angular/core';
+import { ResolveFn } from '@angular/router';
+
+import { Role } from './role';
+import { RoleService } from './role.service';
+
+export const roleListResolver: ResolveFn<Role[]> = () => {
+  return inject(RoleService).list();
+};