- add: Changeling antagonist (#2)

* Changeling WIP

* UI

* Pointers fix

* Moved out abilities

* Regenerate ability

* Fixed Regenerate ability
Prevent ghosting while regenerating

* Cleanup

* Base lesser form

* Finished Lesser Form && Transform

* Transform Sting

* Blind Sting

* Mute Sting
Added OnExamine on absorbed human

* Hallucination Sting
Changeling Absorb and transfer absorbed entities to absorber

* Cryogenic Sting

* Adrenaline Sacs

* Transform now uses Polymorph

* Armblade, Shield, Armor

* Tentacle Arm ability
Tentacle Gun system

* WIP with bugs

* WiP bugs

* fix implant transfer

* Fixed bugs with shop transfer and actions transfer

* Just in case

* Vi sitter i ventrilo och spelar DotA

* Fixes and proper LesserForm tracking

* !!!!!

* Fixed empty buttons

* WIP Gamerule
Ready - shop

* nerf stun time cause its sucks

* cleaning

* just in case

* Absorb DNA Objective.

* Partial objectives with bugs

* fix

* fix pointer

* Changeling objectives

* Changeling objectives №2

* Admin verb, game rule

* Fixed empty list check
Icons for objectives

* Changeling chat, changeling names etc.

* fix some merge errors

* - fix: Fixed all bugs with changeling

---------

Co-authored-by: Y-Parvus <yevhen.parvus@gmail.com>
Co-authored-by: Y-Parvus <61109031+Y-Parvus@users.noreply.github.com>
Co-authored-by: HitPanda <104197232+EnefFlow@users.noreply.github.com>
Co-authored-by: EnefFlow <regeto90@mail.ru>

Content.Shared/Actions/ActionContainerSystem.cs

@@ -174,6 +174,32 @@ public sealed class ActionContainerSystem : EntitySystem
         DebugTools.AssertEqual(oldContainer.Container.Count, 0);
     }
 
+
+    //Miracle edit
+    public void TransferAllActionsFiltered(
+        EntityUid from,
+        EntityUid to,
+        ActionsContainerComponent? oldContainer = null,
+        ActionsContainerComponent? newContainer = null)
+    {
+        if (!Resolve(from, ref oldContainer) || !Resolve(to, ref newContainer))
+            return;
+
+        foreach (var action in oldContainer.Container.ContainedEntities.ToArray())
+        {
+            var actions = newContainer.Container.ContainedEntities;
+
+            var toAdd = MetaData(action).EntityPrototype?.ID;
+
+            if (actions.Select(act => MetaData(act).EntityPrototype?.ID).Any(ext => toAdd == ext))
+                continue;
+
+            TransferAction(action, to, container: newContainer);
+        }
+    }
+
+    //Miracle edit end
+
     /// <summary>
     /// Transfers an actions from one container to another, while changing the attached entity.
     /// </summary>