Adding authentication and authorization flow

MainProject/Services/JwtService.cs

@@ -0,0 +1,32 @@
+using Microsoft.IdentityModel.Tokens;
+using System;
+using System.Collections.Generic;
+using System.IdentityModel.Tokens.Jwt;
+using System.Security.Claims;
+using System.Text;
+
+namespace BasicDotnetTemplate.MainProject.Services;
+
+public interface IJwtService
+{
+    
+}
+
+public class JwtService : BaseService, IJwtService
+{
+    private readonly string _jwtKey;
+    private readonly string _jwtIssuer;
+    private readonly string _jwtAudience;
+
+    public JwtService(
+        IConfiguration configuration
+    ) : base(configuration)
+    {
+        _jwtKey = _appSettings?.JWTSettings?.Secret ?? String.Empty;
+        _jwtIssuer = _appSettings?.JWTSettings?.ValidIssuer ?? String.Empty;
+        _jwtAudience = _appSettings?.JWTSettings?.ValidAudience ?? String.Empty;
+    }
+
+    
+}
+