* Split centrals to scan with their identity so they receive direct
advertising packets.
* Split peripherals to use direct advertising if they have an existing
bond to a split central.
* Proper usage of bt_uuid_cmp.
* Central's don't start scanning for peripherals if
`ZMK_BLE_CLEAR_BONDS_ON_START` is enabled.
* Split peripherals don't advertize if
`ZMK_BLE_CLEAR_BONDS_ON_START` is enabled.
* Add new API/status to track state of the
peripheral connection to the central.
* Add new peripheral status widget for displaying
the current status of the connection to
the central.