Implement hot reloading

game/CMakeLists.txt

@@ -1,12 +1,17 @@
-add_executable(game main.c)
+if(${HOTRELOAD})
+  add_library(game SHARED main.c)
+  get_target_property(ENGINE_INCLUDES engine INCLUDE_DIRECTORIES)
+  target_include_directories(game PRIVATE ${ENGINE_INCLUDES})
+else()
+  add_executable(game main.c)
+  target_link_libraries(game PRIVATE engine)
+endif()
 set_default_target_options(game)
 target_include_directories(game PUBLIC include)
 
 target_link_libraries(game PRIVATE
-  engine
   m
   LibXml2::LibXml2
   SDL2::SDL2
-  SDL2::SDL2main
   SDL2_image::SDL2_image
 )