[super-productivity] Show running task timer in the phone status bar

### Problem Statement When a task timer is running, there is no quick way to see the elapsed time without opening the app. ### Possible Solution Display the running task timer in the phone’s status bar (top bar) so users can quickly see that a timer is active and how much time has passed. A status bar indicator showing the running timer(similar to how an ongoing call indicator appears when a call is minimized) ### Describe alternatives you've considered _No response_ ### Additional context _No response_