See: https://github.com/swaywm/sway/issues/4511
Adds a bool config option `primary_selection`, which explicitly
enables/disables the primary selection clipboard. Defaults to enabled.
This is implemented as a launch-only option which enables or disables the creation of the
`zwp_primary_selection_device_manager_v1` global.
Co-authored-by: Tilde Rose <t1lde@protonmail.com>