[Q] Open App-Drawer with Home-Button topic

Hi everybody,
I wanted to change the function of my Home-Button to that it opens the App-Drawer.

In the settings there is no option like that of course.
I already googled and found out about the system/usr/keylayout but it seems no one has a solution yet on how to change the shortcut to the app drawer.

Does anybody have an idea?
Any help or hints appreciated :)