pomoplus: new setting and minor changes

[notEvil]

see https://notevil.github.io/BangleApps/?q=pomoplus

• adds setting "Show clock"

If set, returns to clock (Bangle.showClock()) after start/resume.

• minor changes
  • (changed*) buzz pattern of long break
  • added g.clear() and adjusted .clearRect in drawTimerAndMessage
  • replaced g.getWidth() and g.getHeight() with w and h

@bruceblore is this in conflict with your vision for this app?

*nothing changed since atm the last buzz immediately follows the second one

[bruceblore]

No conflict with my vision. I think that's a good feature to have, and people who do not like it can just turn it off. And I appreciate the code quality improvements.

[gfwilliams]

Looks good to me! Thanks for the link to try it out.

I guess a nice addition at some point might be to try and use the sched library to schedule the timer (rather than boot code?). Having less boot code means app switching is a bit faster :)