ADD: new track message, Entity class and Position class

cmake/Modules/ProcessGIT.cmake

@@ -0,0 +1,17 @@
+if (GIT_FOUND)
+  execute_process(
+  COMMAND git rev-parse --abbrev-ref HEAD
+  WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+  OUTPUT_VARIABLE GIT_BRANCH
+  OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+
+# Get the latest abbreviated commit hash of the working branch
+execute_process(
+  COMMAND git log -1 --format=%h
+  WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+  OUTPUT_VARIABLE GIT_COMMIT_HASH
+  OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+
+endif()