Function notify

notify(s: string): string
Sends a desktop notification using iTerm's OSC 9.
```
OSC 9 ; Mc ST
OSC 9 ; Mc BEL
```
Where Mc is the notification body.
Parameters
- s: string
  The notification body text
Returns string
The ANSI escape sequence for desktop notification

See
https://iterm2.com/documentation-escape-codes.html
- Defined in src/notification.ts:15