- 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/Chat/ChatChannel.cs

@@ -75,17 +75,22 @@ namespace Content.Shared.Chat
         AdminChat = 1 << 12,
 
         /// <summary>
-        ///     Unspecified.
+        /// Changeling
         /// </summary>
-        Unspecified = 1 << 13,
+        Changeling = 1 << 13,
 
         //WD EDIT
         Cult = 1 << 14,
 
+        /// <summary>
+        ///     Unspecified.
+        /// </summary>
+        Unspecified = 1 << 15,
+
         /// <summary>
         ///     Channels considered to be IC.
         /// </summary>
-        IC = Local | Whisper | Radio | Dead | Emotes | Damage | Visual,
+        IC = Local | Whisper | Radio | Dead | Emotes | Damage | Visual | Changeling,
 
         AdminRelated = Admin | AdminAlert | AdminChat,
     }