Cleanup & Fixes for .NET 5 (#309)

- [X] Fixes several bugs
- [X] Updates more ordinal issues
- [X] Cleans up the code a bit
- [X] Turns classes static that should have been
- [X] Changes TcpServer.Instances to a HashSet

Bumps release version

Projects/UOContent/Engines/Pathing/SlowAStarAlgorithm.cs

@@ -99,13 +99,13 @@ namespace Server.PathAlgorithms.SlowAStar
                     var yBacktrack = curNode.py;
                     var zBacktrack = curNode.pz;
 
+                    path[pathCount++] = (Direction)curNode.dir;
+
                     if (pathCount == MaxNodes)
                     {
                         break;
                     }
 
-                    path[pathCount++] = (Direction)curNode.dir;
-
                     while (xBacktrack != startNode.x || yBacktrack != startNode.y || zBacktrack != startNode.z)
                     {
                         var found = false;