Add project files.

src/LiteCharmsSecurity.STS.Identity/Services/AuditEventSink.cs

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+// Copyright (c) Jan Škoruba. All Rights Reserved.
+// Licensed under the Apache License, Version 2.0.
+
+using System.Threading.Tasks;
+using Duende.IdentityServer.Events;
+using Duende.IdentityServer.Services;
+using Microsoft.Extensions.Logging;
+
+namespace LiteCharmsSecurity.STS.Identity.Services
+{
+    public class AuditEventSink : DefaultEventSink
+    {
+        public AuditEventSink(ILogger<DefaultEventService> logger) : base(logger)
+        {
+        }
+
+        public override Task PersistAsync(Event evt)
+        {
+            return base.PersistAsync(evt);
+        }
+    }
+}

src/LiteCharmsSecurity.STS.Identity/Services/OpenIdClaimsMappingConfig.cs

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+using System;
+using System.Linq;
+using Duende.IdentityServer.Hosting.DynamicProviders;
+using Duende.IdentityServer.Models;
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.AspNetCore.Authentication.OpenIdConnect;
+using Microsoft.AspNetCore.Http;
+using LiteCharmsSecurity.STS.Identity.Helpers;
+using System.Security.Claims;
+using Microsoft.Extensions.Logging;
+using Microsoft.IdentityModel.Tokens;
+
+namespace LiteCharmsSecurity.STS.Identity.Services;
+
+public class OpenIdClaimsMappingConfig : ConfigureAuthenticationOptions<OpenIdConnectOptions, OidcProvider>
+{
+    public OpenIdClaimsMappingConfig(IHttpContextAccessor httpContextAccessor, ILogger<ConfigureAuthenticationOptions<OpenIdConnectOptions, OidcProvider>> logger) : base(httpContextAccessor, logger)
+    {
+    }
+    
+    protected override void Configure(ConfigureAuthenticationContext<OpenIdConnectOptions, OidcProvider> context)
+    {
+        var oidcProvider = context.IdentityProvider;
+
+        context.IdentityProvider.Properties.TryGetValue("MapInboundClaims", out var resultMapInboundClaims);
+
+        var mapInboundClaims = resultMapInboundClaims == null || "true".Equals(resultMapInboundClaims);
+
+        context.AuthenticationOptions.MapInboundClaims = mapInboundClaims;
+    }
+}