Added a simple read-only TableModel and made it accessible via GenericCore.

Basically like in this tutorial: https://doc.qt.io/qt-6/modelview.html#2-1-a-read-only-table

CMakeLists.txt

@@ -22,6 +22,7 @@ add_library(${TARGET_APP} STATIC
   ${TS_FILES}
   constants.h
   data/settingshandler.h data/settingshandler.cpp
+  model/tablemodel.h model/tablemodel.cpp
 )
 
 include_directories(${CMAKE_CURRENT_BINARY_DIR})