Hard deprecated the Group::insertAfter() function because it is not used in the Mediawiki codebase
Bug: T311894
Change-Id: I209d3fd492713425a2727fd48c5870f983a39f9b
* Created a buildMenuEntry function
* Replaced all Group::insert() functions with Group::insertEntry()
* Added a trackable parameter to check if a menu entry will be trackable
* Removed the MenuEntry class
* Removed the MenuEntryTest class
* Removed the Group::insert() function
* Changed tests in GroupTest to test Group::insertEntry() function
Bug: T221004
Change-Id: I39bed4e9a9b09f904cb3e5d78ccb3e6e175981a8