Added CLIENT_SWITCH_STATION packet type
Shipmap: When client wants to change station, send packet to server
Added UML scheme for entire project.

- Missing information from teams 3 and 4
- Other teams need to check if the UML information is complete.
Updated the final UML.

- Also created an image.
Send packet when PowerStation power changed.
Merge remote-tracking branch 'origin/Developer' into FeatureStaticGalaxymap