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.Api.Core/Program.cs

@@ -0,0 +1,53 @@
+using FSO.Server.Common;
+using Microsoft.AspNetCore;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Logging;
+
+namespace FSO.Server.Api.Core
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            var host = CreateWebHostBuilder(args).Build();
+            host.Run();
+        }
+
+        public static IAPILifetime RunAsync(string[] args)
+        {
+            var host = CreateWebHostBuilder(args).Build();
+            var lifetime = new APIControl((IApplicationLifetime)host.Services.GetService(typeof(IApplicationLifetime)));
+            host.Start();
+            return lifetime;
+        }
+
+        public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
+            WebHost.CreateDefaultBuilder(args)
+                .UseUrls(args[0])
+                .ConfigureLogging(x =>
+                {
+                    x.SetMinimumLevel(LogLevel.None);
+                })
+                .UseKestrel(options =>
+                {
+                    options.Limits.MaxRequestBodySize = 500000000;
+                })
+                .SuppressStatusMessages(true)
+                .UseStartup<Startup>();
+    }
+
+    public class APIControl : IAPILifetime
+    {
+        private IApplicationLifetime Lifetime;
+        
+        public APIControl(IApplicationLifetime lifetime)
+        {
+            Lifetime = lifetime;
+        }
+
+        public void Stop()
+        {
+            Lifetime.StopApplication();
+        }
+    }
+}