Added Kill Tome (Death Note). (#39011)

Co-authored-by: ScarKy0 <scarky0@onet.eu>

Content.Shared/Paper/PaperSystem.cs

@@ -187,6 +187,7 @@ public sealed class PaperSystem : EntitySystem
     {
         var ev = new PaperWriteAttemptEvent(entity.Owner);
         RaiseLocalEvent(args.Actor, ref ev);
+
         if (ev.Cancelled)
             return;
 
@@ -211,6 +212,9 @@ public sealed class PaperSystem : EntitySystem
 
         entity.Comp.Mode = PaperAction.Read;
         UpdateUserInterface(entity);
+
+        var writeAfterEv = new PaperAfterWriteEvent(args.Actor);
+        RaiseLocalEvent(entity.Owner, ref writeAfterEv);
     }
 
     private void OnRandomPaperContentMapInit(Entity<RandomPaperContentComponent> ent, ref MapInitEvent args)
@@ -319,6 +323,14 @@ public record struct PaperWriteEvent(EntityUid User, EntityUid Paper);
 /// <summary>
 /// Cancellable event for attempting to write on a piece of paper.
 /// </summary>
-/// <param name="paper">The paper that the writing will take place on.</param>
+/// <param name="Paper">The paper that the writing will take place on.</param>
 [ByRefEvent]
 public record struct PaperWriteAttemptEvent(EntityUid Paper, string? FailReason = null, bool Cancelled = false);
+
+/// <summary>
+/// Event raised on paper after it was written on by someone.
+/// </summary>
+/// <param name="Actor">Entity that wrote something on the paper.</param>
+[ByRefEvent]
+public readonly record struct PaperAfterWriteEvent(EntityUid Actor);
+