Persist construction menu favorites server-side (#35867)

* Persist construction menu favorites to player profile

* Use `ProtoId`s for construction favorites

* Validate construction favorites updates from the client

* Actually await the async database call

Content.Shared/Preferences/MsgUpdateConstructionFavorites.cs

@@ -0,0 +1,36 @@
+using Content.Shared.Construction.Prototypes;
+using Lidgren.Network;
+using Robust.Shared.Network;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Preferences;
+
+/// <summary>
+/// The client sends this to update their construction favorites.
+/// </summary>
+public sealed class MsgUpdateConstructionFavorites : NetMessage
+{
+    public override MsgGroups MsgGroup => MsgGroups.Command;
+
+    public List<ProtoId<ConstructionPrototype>> Favorites = [];
+
+    public override void ReadFromBuffer(NetIncomingMessage buffer, IRobustSerializer serializer)
+    {
+        var length = buffer.ReadVariableInt32();
+        Favorites.Clear();
+        for (var i = 0; i < length; i++)
+        {
+            Favorites.Add(new ProtoId<ConstructionPrototype>(buffer.ReadString()));
+        }
+    }
+
+    public override void WriteToBuffer(NetOutgoingMessage buffer, IRobustSerializer serializer)
+    {
+        buffer.WriteVariableInt32(Favorites.Count);
+        foreach (var favorite in Favorites)
+        {
+            buffer.Write(favorite);
+        }
+    }
+}

Content.Shared/Preferences/PlayerPreferences.cs

@@ -1,3 +1,5 @@
+using Content.Shared.Construction.Prototypes;
+using Robust.Shared.Prototypes;
 using Robust.Shared.Serialization;
 using Robust.Shared.Utility;
 
@@ -13,11 +15,12 @@ namespace Content.Shared.Preferences
     {
         private Dictionary<int, ICharacterProfile> _characters;
 
-        public PlayerPreferences(IEnumerable<KeyValuePair<int, ICharacterProfile>> characters, int selectedCharacterIndex, Color adminOOCColor)
+        public PlayerPreferences(IEnumerable<KeyValuePair<int, ICharacterProfile>> characters, int selectedCharacterIndex, Color adminOOCColor, List<ProtoId<ConstructionPrototype>> constructionFavorites)
         {
             _characters = new Dictionary<int, ICharacterProfile>(characters);
             SelectedCharacterIndex = selectedCharacterIndex;
             AdminOOCColor = adminOOCColor;
+            ConstructionFavorites = constructionFavorites;
         }
 
         /// <summary>
@@ -42,6 +45,11 @@ namespace Content.Shared.Preferences
 
         public Color AdminOOCColor { get; set; }
 
+        /// <summary>
+        ///    List of favorite items in the construction menu.
+        /// </summary>
+        public List<ProtoId<ConstructionPrototype>> ConstructionFavorites { get; set; } = [];
+
         public int IndexOfCharacter(ICharacterProfile profile)
         {
             return _characters.FirstOrNull(p => p.Value == profile)?.Key ?? -1;