Goal Keep

「Goal Keep」is a personal OKR app, can make goal, view task progress, add sub task, farm a habit.

introduce：
* Goal, make a flag, split into many task, and view progress
* Main Task, can add sub task, show in next level
* Task, record work and study progress
* Count, record some count number
* Habit, farm a good habit
* Todo, record anything will todo
* Countdown Day, show left day from a special day