feat: added revised version of the old networking system

Shared/Network/Abstract/INetworkManager.cs

@@ -0,0 +1,12 @@
+using System.Collections.Generic;
+using Syntriax.Engine.Core;
+
+namespace Syntriax.Engine.Network;
+
+public interface INetworkManager
+{
+    INetworkCommunicator NetworkCommunicator { get; }
+
+    IReadOnlyDictionary<string, INetworkEntity> NetworkEntities { get; }
+    IBehaviourCollector<INetworkEntity> NetworkEntityCollector { get; }
+}