Class headers should be included via the "ship/" or "libultraship/" directory.

[Kenix3]

Most of this should be able to be done in cmake. This can be done after the libultraship/shipdk split.

[briaguya-ai]

Steps:

1. Restructure /src directory to have fast/lus/ship subdirectories, put appropriate files in each spot
2. Move all headers out of /src into /include mirroring the directory structure of /src

[briaguya-ai]

blocked by #591

[briaguya-ai]

https://github.com/Kenix3/libultraship/blob/main/src/resource/ResourceType.h needs to turn into 2 files