* Adds Offline files to Source Control Changelist Window
* Use TSet.Remove return value to update state.
#rb Sebastien.Lussier
#changelist validated
#ROBOMERGE-SOURCE: CL 16593836 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v828-16531559)
[CL 16593849 by luc eygasier in ue5-release-engine-test branch]
Added Move files operation on files in changelist dialog (incl. move to new)
Added new changelist button in toolbar
Added cancellable "path beautification" when we have deleted/shelved files with no matching file, until we make it lazy and/or batched
#rb sebastien.lussier
[CL 15797238 by julien lheureux in ue5-main branch]
Added an exception to changelist validation for deleted files
Improved display of deleted & shelved objects in changelists & submit dialog - improvements related to OFPA in a subsequent change.
#rb sebastien.lussier
#jira UE-107677, UE-107768
[CL 15322858 by julien lheureux in ue5-main branch]