Also fixed inmediate in PlaceMapNameFrame.FillTopBottom to calculate the
amount of loops required. (It fills two tiles in the first iteration,
and four in the remaining, hence the `-2` and `+1` part).
Renamed `title` to `movies`.
Moved some functions from `engine/routines/` to their fitting
directories, and cleaned up the base `engine/` directory.
Moved `engine/pokemon/tmhm.asm` back to `engine/items/`.
Made a new subdirectory:
* engine/tilesets: Contains all map-related graphics routines.