Add route to get a particular book

front/src/api.js

@@ -32,6 +32,10 @@ export function getSearchBooks(searchterm) {
   return useFetch(baseUrl + '/search/' + searchterm);
 }
 
+export function getBook(id) {
+  return useFetch(baseUrl + '/book/' + id);
+}
+
 export function postBook(book) {
   return genericPostCall('/book', book.value)
 }