Merge branch 'leveleditor' into 'main'

CMakeLists.txt

documentation/LevelEditor.md

documentation/architecture.svg

documentation/system-architecture.svg

level-spezifikation.md

res/level.h5

res/map_split_island.h5

src/editor/AdvancedPlacementSwitch.cpp

src/editor/AdvancedPlacementSwitch.hpp

src/editor/AutomateButton.hpp

src/editor/EventHandler.cpp

src/editor/EventHandler.hpp

src/editor/LevelNameEdit.cpp

src/editor/LevelNameEdit.hpp

src/editor/LevelScene.cpp

src/editor/LevelScene.hpp

src/editor/MainWindow.hpp

src/editor/SaveButton.cpp

src/editor/SaveButton.hpp

src/editor/SpriteProvider.cpp