Visualizer seek bar

[The-Ladle]

Basically just an option to set the seek bar as the same from the original design

[cyanChill]

I initially wanted to add this early on in the development process, but got stuck on trying to figure out how to implement this (as at the time, my React Native/mobile development knowledge is non-existent). I noted it down to revisit adding this in the future (guess I forgot to add this in the Feature Road Map).

I think I have a better idea on how this could be implemented since I learned a bit about Kotlin and writing native modules (interface with native Android APIs in React Native) by creating the @missingcore/react-native-metadata-retriever package. However, this is more of a UI thing, I'll hold it off for now as it's a low priority.