VOBOT

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- add UI color option (pink, blue, yellow)
- DailyRountine now support English in female voice, and add Chinese language in DailyRountine
- Vobot Bunny Sleep Trainer custom scenario now support brightness change
- adjust the default brightness on Vobot Bunny Sleep Trainer pre-set scenario
- Sleep Trainer now using AM and PM to show the time
- fixed bugs caused by Sleep Trainer brightness option
- fixed bugs of some button may not work