Need icons for calling screen

[vini-gupta]

Feature Request

We need the following icons for support calling scenarios

Tracking resolution progress

• Hold
• Transfer
• Park call
• Consult then transfer
• Start video with blur
• Keypad (as call-dialpad) (feat(icon): export call-dialpad icon #1271)

[vini-gupta]

@alinais @musingh1

[hughreeling]

#585 - this PR provides an example for actions that should be taken to export existing icons to Teams theme.

[vini-gupta]

@assamad, you can export the following four icons from the not-exported list for calling-scenario
Hold => callhold
transfer => calltransfer
Start video with blur => blurbackground
keypad => calldialpad

We still need icons for the following two scenarios:

1. consult then transfer
2. call park

@kuzhelov I am closing this issue and recreating a new one just with the new icons.