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/Bookmarks/SqlBookmarks.cs

@@ -0,0 +1,35 @@
+using Dapper;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace FSO.Server.Database.DA.Bookmarks
+{
+    public class SqlBookmarks : AbstractSqlDA, IBookmarks
+    {
+        public SqlBookmarks(ISqlContext context) : base(context)
+        {
+        }
+
+        public void Create(DbBookmark bookmark)
+        {
+            Context.Connection.Execute("INSERT INTO fso_bookmarks (avatar_id, type, target_id) " +
+                                        " VALUES (@avatar_id, @type, @target_id)"
+                                        , bookmark);
+        }
+
+        public bool Delete(DbBookmark bookmark)
+        {
+            return Context.Connection.Execute("DELETE FROM fso_bookmarks WHERE avatar_id = @avatar_id AND type = @type AND target_id = @target_id", bookmark) > 0;
+        }
+
+        public List<DbBookmark> GetByAvatarId(uint avatar_id)
+        {
+            return Context.Connection.Query<DbBookmark>("SELECT * FROM fso_bookmarks WHERE avatar_id = @avatar_id", new { avatar_id = avatar_id }).ToList();
+        }
+
+        public List<uint> GetAvatarIgnore(uint avatar_id)
+        {
+            return Context.Connection.Query<uint>("SELECT target_id FROM fso_bookmarks WHERE avatar_id = @avatar_id AND type = 5", new { avatar_id = avatar_id }).ToList();
+        }
+    }
+}