HashMap that tracks {string string} pairs
1) Create an add key/value pair
Must print like this: Enter a key: Im99
Enter a value: texas
Im99/texas was added
2) Create a find value example
Enter a value: texas
Texas is a valid hashmap value.
Else, Texas is not a valid hashmap value.
3) Create a delete example
Enter a key to delete: Im99
Are you sure you want to delete Im99/texas? [y/n]
If yes, delete. If no, return to menu.
IMPORTANT: Must print like this.