Implement floating meeting indicator

[ComputelessComputer]

We are going to make this ↓

show up as a floating indicator and a tray item(while recording)

---

Inspired by Raycast's focus mode.

[yujonglee]

ability to stop transcribing one or both sides of the conversation - it would be huge to add to the floating widget

From JB

[ComputelessComputer]

[ComputelessComputer]