Refactoring of roles and notifications about antagonist assignment (#16864)

* Refactoring of antagonist roles and notifications about antagonist role assignment.
Refactoring of traitor assignment methods and bug fixing.

* Announcement files moved, code is adjusted to new revision

* Play to entity changed to play to global cause of mono audio restrictions.

* Path to audio files changed to sound specifiers, unique alerts for each role.

* Uncommited changes

* New alert sounds for each antag role.

* PR review fixes

* Antagonist role assignment sound notifications moved to Systems, sounds moved to Components.

* License update

* Fixed naming and redundant parameters

---------

Co-authored-by: Титов Вячеслав Витальевич <rincew1nd@yandex.ru>

Content.Server/Objectives/Conditions/RandomTraitorProgressCondition.cs

@@ -3,6 +3,7 @@ using Content.Server.Objectives.Interfaces;
 using Robust.Shared.Random;
 using Robust.Shared.Utility;
 using Content.Server.GameTicking.Rules;
+using Content.Server.Roles;
 
 namespace Content.Server.Objectives.Conditions
 {
@@ -17,7 +18,7 @@ namespace Content.Server.Objectives.Conditions
             var entityMgr = IoCManager.Resolve<IEntityManager>();
 
             var traitors = entityMgr.EntitySysManager.GetEntitySystem<TraitorRuleSystem>().GetOtherTraitorsAliveAndConnected(mind).ToList();
-            List<Traitor.TraitorRole> removeList = new();
+            List<TraitorRole> removeList = new();
 
             foreach (var traitor in traitors)
             {