feat: split tests into per-suite files

tests/CMakeLists.txt

@@ -1,5 +1,13 @@
 add_executable(destrum_tests
-        destrum_tests.cpp
+        main.cpp
+        TestUtils.h
+        core_tests.cpp
+        serialization_tests.cpp
+        physics_tests.cpp
+        assets_tests.cpp
+        graphics_tests.cpp
+        ui_tests.cpp
+        gameplay_tests.cpp
         ${CMAKE_SOURCE_DIR}/lightkeeper/src/components/Activatable.cpp
         ${CMAKE_SOURCE_DIR}/lightkeeper/src/components/Interactable.cpp
         ${CMAKE_SOURCE_DIR}/lightkeeper/src/components/InteractableButton.cpp
@@ -26,4 +34,6 @@ target_link_libraries(destrum_tests PRIVATE destrum::destrum)
 
 destrum_enable_warnings(destrum_tests)
 
-add_test(NAME destrum_tests COMMAND destrum_tests)
+foreach(suite core serialization physics assets graphics ui gameplay)
+    add_test(NAME destrum_tests.${suite} COMMAND destrum_tests ${suite})
+endforeach()