title: Add context menu options for .hex files
body: <p>I'm trying to add to Windows context menu of .hex files only a python script, but I can't find .hex extension in the &quot;HKEY_CLASSES_ROOT&quot;. Currently, I have the script in the context menu for any kind of file but would like to limit it to only appearing when interacting with hex files.</p>
  <p>What's the correct way of doing this?</p>
  <p>Can this configuration be handled via a python script?</p>