MTR UI optimizations and support for new features

Improvement(s)

✔ ️ Room remote allows users to control basic functionality of the room using Teams on their mobile *

? Logitech scribe content camera support for BLE button for sharing into meeting

? Chat bubbles provide notifications for in meeting chat to bring attention to what's being said using meeting chat *

✔ ️ Large gallery and Together mode support is now available in GCC High

? New Skills added to Cortana, Add person by name to the meeting and Call by name

✔ ️ Cortana Push to Talk is enabled by default on all devices. To learn more see Cortana voice assistance in Teams.