Removed NioTSO client and server

- NioTSO client isn't needed because we're using RayLib
- Added FreeSO's API server to handle most backend operations

server/FSO.Server.Database/DA/LotVisits/DbLotVisit.cs

@@ -0,0 +1,37 @@
+using FSO.Common.Enum;
+using System;
+
+namespace FSO.Server.Database.DA.LotVisitors
+{
+    public class DbLotVisit
+    {
+        public int lot_visit_id { get; set; }
+        public uint avatar_id { get; set; }
+        public int lot_id { get; set; }
+        public DbLotVisitorType type { get; set; }
+        public DbLotVisitorStatus status { get; set; }
+        public DateTime time_created { get; set; }
+        public DateTime? time_closed { get; set; }
+    }
+
+    public class DbLotVisitNhood : DbLotVisit
+    {
+        public uint neighborhood_id { get; set; }
+        public uint location { get; set; }
+        public LotCategory category { get; set; }
+    }
+
+    public enum DbLotVisitorType
+    {
+        owner,
+        roommate,
+        visitor
+    }
+
+    public enum DbLotVisitorStatus
+    {
+        active,
+        closed,
+        failed
+    }
+}