OPNSense/core b16e03csrc/etc rc.newwanip rc.newwanipv6, src/etc/inc interfaces.inc

interfaces: some changes to VIP handling

* always configure VIPs in interface_configure()
* also configure VIPs in rc.newwanipv6
* link_interface_to_vips() removed
* land IPv6 VIPs on the IPv6 device

Discussed with: @adschellevis
DeltaFile
+13-29src/etc/inc/interfaces.inc
+17-14src/www/system_gateways_edit.php
+1-1src/etc/rc.newwanip
+2-0src/etc/rc.newwanipv6
+33-444 files

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