Jalali calendar and font support

[SaeedZhiany]

This PR

adds

1. Jalali calendar support
2. Custom font support
3. function call for setting a locale for calendars

fixes

1. test failures in sample app

break changes

1. DatePickerDialog.newInstance and TimePickerDialog.newInstance should passed a calendar type
2. DatePickerDialog.initialize and TimePickerDialog.initialize should passed a calendarType

TODOs

• should update README.md file base on new changes

ScreenShots

time	date

[SaeedZhiany]

@wdullaer
please review this PR and test it yourself too on a real device or an emulator and let me know what you're thinking about.

[SaeedZhiany]

@wdullaer please review this.

[poyanayeri]

سلام ,
میشه لطفا راهنمایی کنید چطوری میشه این تقویم جلالی رو به پروژه اضاف کرد ؟
ممنون میشم.

[habibi-dev]

We are still waiting :|

[SaeedZhiany]

@poyanayeri and @habibi-dev

There's no more work I can do, I'm also waiting for @wdullaer to reviewing this.
meanwhile, you can download the project (including this branch) from my forked repository and add it as a module in your android studio and use it. Or you can use this library

[AzadMohammadi-z]

Does it work for react native ?

[SaeedZhiany]

@AzadMohammadi-z

It's a native android library. you should write an RN wrapper for it if you want to use it in RN projects.