added finding path with A* and json file to know where character can walk

proj-web/CMakeLists.txt

@@ -118,6 +118,8 @@ set(SOURCES
     ../src/GameConstants.cpp
     ../src/ScriptEngine.h
     ../src/ScriptEngine.cpp
+    ../src/navigation/PathFinder.h
+    ../src/navigation/PathFinder.cpp
 )
 
 add_executable(space-game001 ${SOURCES})