space_view3d_spacebar_menu: large commit, rewrite: T68591

space_view3d_spacebar_menu/__init__.py

space_view3d_spacebar_menu/animation_menus.py

space_view3d_spacebar_menu/curve_menus.py

space_view3d_spacebar_menu/edit_mesh.py

space_view3d_spacebar_menu/object_menus.py

space_view3d_spacebar_menu/sculpt_brush_paint.py

space_view3d_spacebar_menu/select_menus.py

space_view3d_spacebar_menu/snap_origin_cursor.py

space_view3d_spacebar_menu/transform_menus.py

space_view3d_spacebar_menu/view_menus.py