pfSense

Notification code updates

• Rework how notice queue files are setup and maintained, which should
  allow all users to send notifications now without error. Implements #14337
• Update code for PHP 8.x in frontend and backend
• Fixup repeat message detection a bit to improve chances of it catching...

Refactor rule separators. Fix #14691

Type column for Alias list. Implements #13245

While here, clean up some redundant/incorrect variable usage.

Adapted from PR 4592 submitted by luckman212 @ GitHub

Add a setting for PHP memory limit in System -> Advanced. Feature #13377

Cast to string before ctype_digit() testing. Fixes #14702

Extend support for SCTP in firewall and NAT rules. Implement #14640

Support specialnets in outbound NAT source/destination. Implement #3288
Also, show an asterisk in place of 'Any' for the source,
and avoid generating oNAT rules with invalid aliases.

Extend alias and VIP checks to outbound NAT

Show the correct selection when editing oNAT rules
Fixes a copy/paste error from 887d0e7d.

Refactor outbound NAT target config field
Don't keep a separate target field, and handle
some older configs on upgrade.