chore: created new folder 'Bookshelf' for class

Author: Cogbonnia

lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/chelseaogbonnia/Book.java renamed to lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/chelseaogbonnia/Bookshelf/Book.java

@@ -1,4 +1,4 @@
-package com.codedifferently.lesson16.chelseaogbonnia;
+package com.codedifferently.lesson16.chelseaogbonnia.Bookshelf;
 
 enum Genre {
   FICTION,

lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/chelseaogbonnia/Bookshelf.java renamed to lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/chelseaogbonnia/Bookshelf/Bookshelf.java

@@ -1,4 +1,4 @@
-package com.codedifferently.lesson16.chelseaogbonnia;
+package com.codedifferently.lesson16.chelseaogbonnia.Bookshelf;
 
 import java.util.ArrayList;
 import java.util.Collections;

lesson_16/objects/objects_app/src/test/java/com/codedifferently/lesson16/chelseaogbonnia/BookshelfTest.java renamed to lesson_16/objects/objects_app/src/test/java/com/codedifferently/lesson16/chelseaogbonnia/Bookshelf/BookshelfTest.java

@@ -1,4 +1,4 @@
-package com.codedifferently.lesson16.chelseaogbonnia;
+package com.codedifferently.lesson16.chelseaogbonnia.Bookshelf;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertThrows;