Organized the library module for future changes

[BobbyESP]

Part of #256

[JunkFood02]

Changing package name would bring a lot of build failure and needs manual migration for end users (like the changeset in the app module). Unless we have a better reason, I'd like to keep the API change minimal. Ideally, the refactor should be made under the hood without introducing a big breaking change.

[BobbyESP]

Changing package name would bring a lot of build failure and needs manual migration for end users (like the changeset in the app module). Unless we have a better reason, I'd like to keep the API change minimal. Ideally, the refactor should be made under the hood without introducing a big breaking change.

Makes sense. I'll be using the new folders/packages for only the new changes and keep the current structure.

Thanks for the review!