add version info to compiled executable

This works on Windows, but it might not work on Linux.
Also the version number is not updated automatically.
I probably have to generate the file from a template, because
even though this is a python file you cannot add python code.

make_installer.py

@@ -7,6 +7,7 @@ PyInstaller.__main__.run([
     'krowlog.py',
     # '--onefile',
     '--noconfirm',
+    '--version-file=version.py',
     '--name=krowlog',
     '--windowed',
     '--icon=icons' + os.sep + 'krowlog.ico',  # doesn't work on Linux (needs .desktop file), windows needs ico