Bluetooth: Host: Add new advertiser params macro

With the deprecation of the advertiser options to automatically add the
device name in the scan response and advertising data, some macro used
to set the advertiser parameter also became deprecated. That's the case
for `BT_LE_EXT_ADV_CONN_NAME` and `BT_LE_EXT_ADV_SCAN_NAME`. The issue
is that those two macro didn't had their equivalent without including
the name. So this commit add `BT_LE_EXT_ADV_CONN` and
`BT_LE_EXT_ADV_SCAN` to be used instead.

Signed-off-by: Théo Battrel <theo.battrel@nordicsemi.no>