[feature request] cursor theme selection for scroll wm

### Feature Description

in scroll wm, cursor theme can be selected using "seat * xcursor_theme cursor_name cursor_size"

### Use Case

helpful instead of manually editing the file

### Compositor(s)

- [ ] All compositors
- [ ] Niri
- [ ] Hyprland
- [ ] MangoWC (dwl)
- [ ] Sway
- [x] Other (specify below)

### Proposed Solution

For scroll wm

### Alternatives/Existing Solutions

_No response_

Start by locating the existing compositor integration and configuration entry points for scroll wm, then compare how cursor settings are handled for supported compositors. Confirm where the `seat * xcursor_theme cursor_name cursor_size` values would be represented and define completion as selecting a cursor theme without manually editing a file.

Written by the indexing model from the issue text.