feat: ia network settings (#3479)

* feat(ia-network-settings): initial dev

* feat(ia-network-settings): tweak to initial code (php8/deprecated/debug.log) prior to re-using for network settings

* feat(ia-network-settings): refactor for settings using hidden menu items

* feat(ia-network-settings): move distributor into settings

* feat(ia-network-settings): refactoring

* feat(ia-network-settings): refactor for add_page parent constructor

* feat(ia-network-settings): combine menu functions

* feat(ia-network-settings): spelling

* feat(ia-network-settings): remove card that were not part of scope

* feat(ia-network-settings): menu priority

* feat(ia-networking-settings): roll back for menu

* feat(ia-network-settings): adjustments to menu

* feat(ia-network-settings): pre-merge clean up

* feat(ia-network-settings): reapply dashboard

* feat(ia-network-settings): re-apply after merge

* feat(ia-network-settings): alphabetize functions by name

* feat(ia-network-settings): static var and docs

* feat(ia-network-settings): hidden pages

* feat(ia-network-settings): admin header on add new and edit screens

* feat(ia-network-settings): admin header on add new and edit screens (again)

* feat(ia-network-settings): fix html titles

* feat(ia-network-settings): fix html titles (again)

* feat(ia-network-setting): parent menu highlighting

* fix(ia-hide-notices): change individual hooks to use parent construct instead

* feat(ia-network-settings): code improvements

* feat(ia-network-settings): reduce site role function to one is_callable