ADD: new track message, Entity class and Position class

cmake/Modules/compdb.cmake

@@ -0,0 +1,23 @@
+find_program(COMPDB_PATH
+      NAME compdb
+      PATHS ~/.local/bin/
+            /bin
+            /sbin
+            /usr/bin
+            /usr/sbin
+            /usr/local/bin
+            /usr/local/sbin
+  )
+
+
+
+if (COMPDB_PATH)
+  IF(NOT TARGET COMPD)
+    add_custom_target(COMPD
+      ALL
+      DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/compile_commands.json
+      WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+      COMMAND ${COMPDB_PATH} -p ${CMAKE_CURRENT_BINARY_DIR} list >compile_commands.json
+    )
+  endif()
+endif()