widgets/code_challenge library

1. altcha_widget package
2. documentation
3. widgets/code_challenge.dart

altcha_widget package

1. Libraries
2. altcha
3. exceptions
4. localizations
5. models/challenge
6. models/code_challenge
7. models/server_verification
8. models/solution
9. widget
10. widgets/audio_button
11. widgets/code_challenge