Add support for resValue fields

[bogdanzurac]

Currently the library only supports buildConfigFields, which are useful for runtime use-cases. It would be great to also support resValue fields, since those can be used directly inside the AndroidManifest at compile time.

http://dcow.io/android-gradle-plugin-docs/com/android/build/gradle/api/BaseVariant.html#resValue(java.lang.String,%20java.lang.String,%20java.lang.String)

[nikialeksey]

Thanks for the issue! You may try a new porflavor version 0.1.0 with supporting resValue fields

[bogdanzurac]

Can confirm it works like a charm, thanks a lot! 🤗