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/Startup.cs

@@ -0,0 +1,63 @@
+using FSO.Server.Common;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace FSO.Server.Api.Core
+{
+    public class Startup : IAPILifetime
+    {
+        public IApplicationLifetime AppLifetime;
+
+        public Startup(IConfiguration configuration)
+        {
+            Configuration = configuration;
+        }
+
+        public IConfiguration Configuration { get; }
+
+        // This method gets called by the runtime. Use this method to add services to the container.
+        public void ConfigureServices(IServiceCollection services)
+        {
+            services.AddCors(options =>
+            {
+               options.AddDefaultPolicy(
+                   builder =>
+                   {
+
+                       builder.AllowAnyOrigin().AllowAnyMethod().AllowAnyHeader().WithExposedHeaders("content-disposition");
+                   });
+
+                options.AddPolicy("AdminAppPolicy",
+                    builder =>
+                    {
+                        builder.WithOrigins("https://freeso.org", "http://localhost:8080").AllowAnyMethod().AllowAnyHeader().AllowCredentials().WithExposedHeaders("content-disposition");
+                    });
+            }).AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
+        }
+
+        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
+        public void Configure(IApplicationBuilder app, IHostingEnvironment env, IApplicationLifetime appLifetime)
+        {
+            if (env.IsDevelopment())
+            {
+                app.UseDeveloperExceptionPage();
+            }
+            else
+            {
+                app.UseHsts();
+            }
+            app.UseCors();
+            //app.UseHttpsRedirection();
+            app.UseMvc();
+            AppLifetime = appLifetime;
+        }
+
+        public void Stop()
+        {
+            AppLifetime.StopApplication();
+        }
+    }
+}