Fix for Blender 4.4

[endash]

This patch removes the overridden init methods, which are now forbidden (and unnecessary as the execute methods initialize the state themselves.)

[buzzsurfr]

@Ghostkeeper Can you review/push version. I can confirm the patch works for me.

[Jhouny]

After modifying the files it wouldn't install the add-on. I Had to add the manifest file as @icecreammatt pointed out and it worked fine.

Tested on Blender 4.4.0 on Windows 11