Added first app template

backend/login-counter/app.SMTP.Model/EMail.cs

@@ -0,0 +1,11 @@
+using System;
+
+namespace app.SMTP.Model
+{
+    public class EMail
+    {
+        public string Receiver { get; set; }
+        public string Subject { get; set; }
+        public string Message { get; set; }
+    }
+}

backend/login-counter/app.SMTP.Model/app.SMTP.Model.csproj

@@ -0,0 +1,7 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>