Transferring the N-panel to the Object tool

This way, we get rid of an unnecessary menu

The N-panel menu is far from unnecessary, besides the vanilla panels lots of addons put their content there. If it were moved to the object menu:

1. The object menu only appears in object mode, which would remove it from edit mode, sculpt mode, and all of the other modes blender has
2. It would require extra clicks to access
3. The current N-panel has a major feature that the object menu doesn't have: persistence. If it were to be moved there, every time you change a setting or move your mouse too far away, 'poof', it disappears and you have to click back into it