Add prop contentFont for android

[dumihi313]

I added contentFont for custom typeface in content text.
It just work for android

[henninghall]

Thanks for the PR! what do you mean by "content" in this context of "contentFont"?

[dumihi313]

The end objective is to call super.setContentTextTypeface()

so this 'content' is get from this word setContentTextTypeface(), Does it make sense?

[henninghall]

Thanks once again, some questions:

1. Can you give an example on how to use this?
2. Should the prop be the name of the font, a path to a font or a font file?
3. Where should the font file be placed?
4. Does it support built in fonts and/or custom ones?
5. Can we support the android native variant?
6. Can we support iOS?

[dumihi313]

Thanks once again, some questions:

1. Can you give an example on how to use this?
   <DatePicker ....... date={date} onDateChange={setDate} contentFont="fonts/NunitoSans-Italic.ttf" />

2. Should the prop be the name of the font, a path to a font or a font file?
   It should be location path like "fonts/NunitoSans-Italic.ttf"

3. Where should the font file be placed?
   fonts in assets android

4. Does it support built in fonts and/or custom ones?
   yes, as I show on fonts in assets android

5. Can we support the android native variant?
   just only for variant ios-clone

6, Can we support iOS?

As I checked, lib use ios native lib so we can not adjust font family, font size as well ...

[henninghall]

iOS clone is no longer supported, this feature could still be useful for the nativeAndroid variant