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/Tuning/ITuning.cs

@@ -0,0 +1,20 @@
+using System.Collections.Generic;
+
+namespace FSO.Server.Database.DA.Tuning
+{
+    public interface ITuning
+    {
+        IEnumerable<DbTuning> All();
+        IEnumerable<DbTuning> AllCategory(string type, int table);
+        IEnumerable<DbTuningPreset> GetAllPresets();
+        IEnumerable<DbTuningPresetItem> GetPresetItems(int preset_id);
+
+        bool ActivatePreset(int preset_id, int owner_id);
+        bool ClearPresetTuning(int owner_id);
+        bool ClearInactiveTuning(int[] active_ids);
+
+        int CreatePreset(DbTuningPreset preset);
+        int CreatePresetItem(DbTuningPresetItem item);
+        bool DeletePreset(int preset_id);
+    }
+}