[Feature] Adding Flowtime time management alongside pomodoro

[Ashkan4472]

Based on the fact that the majority of Pendulums users are developers, there has been created a new technique for time management to boost productivity called the "Flowtime" technique. Please consider searching for this technique and if you find it suitable, add it to Pendulums 2.0

Here is a link about Flowtime

[arminghm]

Thanks for chipping in 👍

[mohammadrafigh]

Thank you Ashkan. I'm already using this technique for myself. Sure it's a good idea. It's not dedicated to developers, everyone can use it.