Services, service registration and dependency injection for auth

dotnet/AipsCore/Application/Abstract/UserContext/ITokenProvider.cs

@@ -0,0 +1,8 @@
+using AipsCore.Domain.Models.User;
+
+namespace AipsCore.Application.Abstract.UserContext;
+
+public interface ITokenProvider
+{
+    string Generate(User user, IList<string> roles);
+}

dotnet/AipsCore/Application/Authentication/Token.cs

@@ -0,0 +1,3 @@
+namespace AipsCore.Application.Authentication;
+
+public record Token(string Value);