Feature: Collection Module & Cleanup

Major changes in this PR include:
- New collection module **`(catchem.collection)`**
- New People module **`(collection.people)`**
- New Person module **`(people.person)`**
- Relocation and renaming of **`catchem.profile`** to **`game.profile`**. _Reason: Nesting the profile module under its related parent module (game) leads to a cleaner root project directory. I was about to clutter this root directory when creating the collection and people modules for the Collection screen and decided to refactor._