Add notification prefs to channel options menu

While it's nice to have quick access to mute a channel from the channel
options menu that's displayed when clicking on the 3-dots next to the name
in the channel list, it would also be helpful to have access to
notification settings from that menu as well.

[image: Screenshot 2023-10-10 at 8.08.05 AM.png]

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*Derek Gottlieb*
Sangoma | Cloud Janitor | Engineering / Switchvox Cloud Dev