Refactor minds to be entities with components, make roles components (#19591)

Co-authored-by: ShadowCommander <10494922+ShadowCommander@users.noreply.github.com>
Co-authored-by: DrSmugleaf <DrSmugleaf@users.noreply.github.com>

Content.Server/Ghost/ObserverRoleComponent.cs

@@ -0,0 +1,11 @@
+namespace Content.Server.Ghost
+{
+    /// <summary>
+    /// This is used to mark Observers properly, as they get Minds
+    /// </summary>
+    [RegisterComponent]
+    public sealed partial class ObserverRoleComponent : Component
+    {
+        public string Name => Loc.GetString("observer-role-name");
+    }
+}