* feat(wifi-hotspot): add NetworkManager hotspot control plugin
Expose bar toggle, panel, and IPC to start/stop a Wi-Fi hotspot and list connected clients.
* refactor(hotspot): rename plugin directory to hotspot
Align the folder name with the cleboost/hotspot plugin id.
* refactor(hotspot): align plugin id and state keys with hotspot slug
Update manifest id, IPC references, and shared state keys after the directory rename.
