OPNSense/core ee542d2. plist, src/etc/inc interfaces.inc

add support for additional loopbacks (https://github.com/opnsense/core/issues/3832) (#3840)

Add *Interfaces: Other Types: Loopback*.

-  while here, also add the device name in interfaces.php and support setting an initial description on new interfaces (copy device description if available)

- check usages of lo0 and change to lo if not specific for our default loopback

DeltaFile
+76-0src/etc/inc/plugins.inc.d/loopback.inc
+74-0src/opnsense/mvc/app/controllers/OPNsense/Interfaces/Api/LoopbackSettingsController.php
+63-0src/opnsense/mvc/app/views/OPNsense/Interface/loopback.volt
+38-0src/opnsense/mvc/app/controllers/OPNsense/Interfaces/LoopbackController.php
+35-0src/opnsense/mvc/app/models/OPNsense/Interfaces/Loopback.php
+25-2src/www/interfaces_assign.php
+20-0src/opnsense/mvc/app/models/OPNsense/Interfaces/Loopback.xml
+12-0src/opnsense/mvc/app/controllers/OPNsense/Interfaces/forms/dialogLoopback.xml
+10-1src/www/interfaces.php
+7-0plist
+7-0src/opnsense/mvc/app/models/OPNsense/Interfaces/ACL/ACL.xml
+4-2src/www/firewall_virtual_ip_edit.php
+3-3src/www/interfaces_bridge_edit.php
+5-0src/opnsense/service/conf/actions.d/actions_interface.conf
+2-0src/etc/inc/interfaces.inc
+1-0src/opnsense/mvc/app/models/OPNsense/Interfaces/Menu/Menu.xml
+382-816 files

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