Is your feature request related to a problem? Please describe.
Would like to have apis to support phone related operations, since WeChat Work, DingDing and Lark all supports modify the phone number of the contact.

Describe the solution you'd like
We could add methods below to Contact class

// Get phone number
public async phone (): Promise<string>
// Set phone number
public async phone (phoneNum: string): Promise<void>

Additional context
Add any other context or screenshots about the feature request here.

[enhancement]