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/Roles/AntagonistRole.cs

@@ -0,0 +1,24 @@
+using Content.Shared.Roles;
+
+namespace Content.Server.Roles;
+
+public abstract class AntagonistRole : Role
+{
+    public AntagPrototype Prototype { get; }
+
+    public override string Name { get; }
+
+    public override bool Antagonist { get; }
+
+    /// <summary>
+    /// .ctor
+    /// </summary>
+    /// <param name="mind">A mind (player)</param>
+    /// <param name="antagPrototype">Antagonist prototype</param>
+    protected AntagonistRole(Mind.Mind mind, AntagPrototype antagPrototype) : base(mind)
+    {
+        Prototype = antagPrototype;
+        Name = Loc.GetString(antagPrototype.Name);
+        Antagonist = antagPrototype.Antagonist;
+    }
+}

Content.Server/Roles/NukeopsRole.cs

@@ -0,0 +1,8 @@
+using Content.Shared.Roles;
+
+namespace Content.Server.Roles;
+
+public sealed class NukeopsRole : AntagonistRole
+{
+    public NukeopsRole(Mind.Mind mind, AntagPrototype antagPrototype) : base(mind, antagPrototype) { }
+}

Content.Server/Roles/TraitorRole.cs

@@ -0,0 +1,10 @@
+using Content.Server.Chat.Managers;
+using Content.Shared.PDA;
+using Content.Shared.Roles;
+
+namespace Content.Server.Roles;
+
+public sealed class TraitorRole : AntagonistRole
+{
+    public TraitorRole(Mind.Mind mind, AntagPrototype antagPrototype) : base(mind, antagPrototype) { }
+}

Content.Server/Roles/ZombieRole.cs

@@ -0,0 +1,8 @@
+using Content.Shared.Roles;
+
+namespace Content.Server.Roles;
+
+public sealed class ZombieRole : AntagonistRole
+{
+    public ZombieRole(Mind.Mind mind, AntagPrototype antagPrototype) : base(mind, antagPrototype) { }
+}