keybinder: refactor

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
keybinder: ungrab has to be sync

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
make grab sync for now

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>