Migrate support library dependencies to androidx

[damien5314]

Why this change is needed?

AndroidX is replacing the Android support library. Client applications for CardStackView can currently use the library by enabling jetifier within Android Studio, but long term it's probably best to update to AndroidX at the source.

What has changed in this PR?

• Simply ran the AndroidX migration tool in Android Studio. All android.support packages have been replaced with the new androidx dependencies.
• Enables jetifier in gradle options to allow the sample app to compile. This is required because Glide is not yet AndroidX compatible.

How to test it?

• [x] Smoke test sample app

[yuyakaido]

@damien5314 Thanks!

[yuyakaido]

@damien5314 Ver. 2.3.3 has been released including this improvement. Thank you for your contribution!