Add dialer keyboard
## Icon Request

* Icon name: dialer-keyboard
* Tags of this icon: dialer
* Use case: for voip or smartphone interfaces
* Screenshots of similar icons:
<img width="251" alt="Screen Shot 2020-10-30 at 11 07 38" src="https://user-images.githubusercontent.com/66440033/97714698-3f0f7800-1aa0-11eb-992e-b19a07a87954.png">
<img width="279" alt="Screen Shot 2020-10-30 at 11 08 00" src="https://user-images.githubusercontent.com/66440033/97714745-4f275780-1aa0-11eb-8876-8732623e79e3.png">
<img width="333" alt="Screen Shot 2020-10-30 at 11 08 10" src="https://user-images.githubusercontent.com/66440033/97714764-53ec0b80-1aa0-11eb-841f-a68c9e42a2a9.png">

Thank you!