feat(challenge17): router testing

apps/router-testing/src/app/book.model.ts

@@ -0,0 +1,17 @@
+export interface Book {
+  name: string;
+  author: string;
+}
+
+export const availableBooks = [
+  { name: 'To Kill a Mockingbird', author: 'Harper Lee' },
+  { name: '1984', author: 'George Orwell' },
+  { name: 'The Catcher in the Rye', author: 'J.D. Salinger' },
+  { name: 'The Great Gats', author: 'F. Scott Fitzgerald' },
+  { name: 'Pride and Prejudice', author: 'Jane Austen' },
+  { name: 'The Hobbit', author: 'J.R.R. Tolkien' },
+  { name: 'The Lord of the Rings', author: 'J.R.R. Tolkien' },
+  { name: "Harry Potter and the Philosopher's Stone", author: 'J.K. Rowling' },
+  { name: 'The Hunger Games', author: 'Suzanne Collins' },
+  { name: 'Animal Farm', author: 'George Orwell' },
+];