refactor: merge packages

[ahv15]

Merged las and ligthandshadow into a single package based on the below structure.

New Structure

[jdrueckert]

A few questions/remarks:

1. What do SetTeamAction and ScoreHud have to do with world gen?
2. In comparison to barrier and flag, jobs and logic seem a bit generic
3. What do ClientSkin, Teleporter and particles have to do with the gamestate?
4. While PlayerDeath might result from combat, I'm not sure, it's a very good fit for a combat pkg. Same for PlayerStatistics which admittedly do consist mostly of K/D but also of captured flags / scored points.

To be honest this feels a bit as if you just copied the contents of one of the two packages into the other without really putting much thought into a suitable structure. Don't get me wrong, splitting up the former componentsystem sub-package is a good start, but this definitely does not cover it.

We expect a consistent and meaningful structure on which we can build for the rest of the module overhaul. Naturally, over the course of the overhaul it's possible that there will be some more adjustments to it, but we need a reasonable base to work with.

[jdrueckert]

Superseded by #245