new folder structure

core/CMakeLists.txt

@@ -0,0 +1,23 @@
+
+
+set(SourceFiles
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/defs.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/Frame.cpp
+)
+
+add_library(core STATIC ${SourceFiles})
+target_include_directories(core PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include)
+target_link_libraries(core PUBLIC fmt::fmt)
+set_property(TARGET core PROPERTY POSITION_INDEPENDENT_CODE ON)
+
+if(AARE_BUILD_TESTS)
+    set(TestSources
+            ${CMAKE_CURRENT_SOURCE_DIR}/src/defs.test.cpp
+        )
+    target_sources(tests PRIVATE ${TestSources} )
+
+    #Work around to remove, this is not the way to do it =) 
+    # target_include_directories(tests PRIVATE ${CMAKE_SOURCE_DIR}/include/common)
+    target_link_libraries(tests PRIVATE core)
+
+endif()