fix buidling as library

Author: atomlin-git

CMakeLists.txt

@@ -9,5 +9,5 @@ if(${EPS_LIB})
 endif()
 
 target_sources(${PROJECT_NAME} PRIVATE source/main.cpp)
-target_include_directories(${PROJECT_NAME} PRIVATE includes)
+target_include_directories(${PROJECT_NAME} PUBLIC includes)
 target_compile_features(${PROJECT_NAME} PUBLIC cxx_std_20)