GATT Client
- bt_gatt_client_init()
- bt_gatt_client_connect()
- bt_gatt_client_disconnect()
- bt_gatt_client_conn_state_get()
- bt_gatt_client_passkey_set()
- bt_gatt_client_pair()
- bt_gatt_client_unpair()
- bt_gatt_client_attr_discover()
- bt_gatt_client_attr_count_get()
- bt_gatt_client_attr_get()
- bt_gatt_client_mtu_get()
- bt_gatt_client_write()
- bt_gatt_client_write_no_rsp()
- bt_gatt_client_read()
- bt_gatt_client_subscribe()
- bt_notification_read()
- bt_gatt_client_unsubscribe()
- bt_gatt_client_deinit()