research console radio messages on unlock (#22166)

Content.Server/Research/Components/ResearchConsoleComponent.cs

@@ -1,8 +1,15 @@
+using Content.Shared.Radio;
+using Robust.Shared.Prototypes;
+
 namespace Content.Server.Research.Components;
 
 [RegisterComponent]
 public sealed partial class ResearchConsoleComponent : Component
 {
-
+    /// <summary>
+    /// The radio channel that the unlock announcements are broadcast to.
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public ProtoId<RadioChannelPrototype> AnnouncementChannel = "Science";
 }