Adds an option to the show the next up during the end credits (outro)
instead of at the very end of the video.
The next up pushes up from the bottom and the video scales down to fit
above.
Still a WIP though
### Sample screenshot
<img width="1280" height="771" alt="next_up_credits Large"
src="https://github.com/user-attachments/assets/9a03d0ec-325d-4efe-a28e-51270ddaaa89"
/>
Related to #103
Adds ffmpeg decoder module to support a few extra audio formats such as
AC3, EAC3, DTS, & TrueHD.
This increases the apk size by about 5.4mb (release 17.4mb->22.8mb), but
definitely worth it for the added support.
