Privide the ability to manage phone numbers

[dsietz]

If we provide the ability to manage phone number on an object To the engineer Then they will be able to add context to the object as necessary To validate this, we will:

• [x] Demonstrate that a phone number can be entered
• [x] Demonstrate that a phone number can be retrieved
• [x] Demonstrate that a phone number can be updated
• [x] Demonstrate that a phone number can be deleted
• [x] Demonstrate that phone number can be searched
• [x] Ensure all tests are passing
• [x] Confirm the documentation is up to date

[dsietz]

released in version 0.6.0