Add Services: Start and Stop Timer

[nicknol]

Checklist

• I have filled out the template to the best of my ability.
• This only contains 1 feature request (if you have multiple feature requests, open one feature request for each feature request).
• This issue is not a duplicate feature request of previous feature requests.

Is your feature request related to a problem? Please describe.

no problem - just a new feature

Describe the solution you'd like

Two services that would

• start
• stop
  a MeasureIt timer

Describe alternatives you've considered

At the moment a timer is started and stopped (reset) when a status change happens. Which works!!

But in some cases I only have an automation that detects something for which I would like to measure the duration, e.g. the time by dish washer, dryer, washing machine, ... are already running. I have an automation that detects start and end of the runs.
Currently, the automation turns an input_boolean to on when the run starts and turns it off when the run has ended; based on that input_boolean MeasureIt measures the run time.

Ideally I would like to save the input_boolean helpers here, and use services to start/stop the timer.

Additional context

nice to have:
these services could help to easily create simple stop watches.
a 'continue' service would complete the stop watches