Added mongodb as database

src/Prospect.Server.Api/Startup.cs

@@ -1,16 +1,32 @@
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
+using Prospect.Server.Api.Config;
 using Prospect.Server.Api.Middleware;
+using Prospect.Server.Api.Services.Database;
 using Serilog;
 
 namespace Prospect.Server.Api
 {
     public class Startup
     {
+        public Startup(IConfiguration configuration)
+        {
+            Configuration = configuration;
+        }
+
+        private IConfiguration Configuration { get; }
+        
         public void ConfigureServices(IServiceCollection services)
         {
+            services.Configure<DatabaseSettings>(Configuration.GetSection(nameof(DatabaseSettings)));
+            services.Configure<PlayFabSettings>(Configuration.GetSection(nameof(PlayFabSettings)));
+
+            services.AddSingleton<DbUserService>();
+            services.AddSingleton<DbEntityService>();
+            
             services.AddControllers();
         }