Implemented configuration block to access other setting like font scale.

[DastanIqbal]

This PR help devs to change configuration setting along with locale. For eg. Font Scale, uiMode, colorMode etc

[gunhansancar]

Hi @DastanIqbal thank you for your contribution. It looks great.
However, I'm not sure if this library should allow/enable such configuration changes.
Because IMO this library is only about locale changes, nothing more and nothing less.

[DastanIqbal]

Okay not an issues but when I used the library, then I couldn't change other setting and its restricted to library, because the block I have added that should run along with locale setting, otherwise changes won't reflect in app, like I added accessiblity features where I need to increase/decrease app text size, that wasn't working, because of the limitation, and block should run before setting createConfigurationContext and its blocks developer.

[gunhansancar]

Similar issues also arise about the dark mode, so I will accept the PR with some modifications, I'll send a commit on top of your PR. I should make it dynamically changeable as well like on button click etc.

[DastanIqbal]

Cool Thanks

[DastanIqbal]

I have fixed conflicts and added Accessibility Sample for font Size in MainActivity,
currently, I am using forked in my app. because we can't change font size in the current implementation