Added gittignore and deleted unused folders

SzCli/Program.cs

@@ -1,2 +1,9 @@
-// See https://aka.ms/new-console-template for more information
-Console.WriteLine("Hello, World!");
+namespace SzCli;
+
+public class Program
+{
+    public static void Main(string[] args)
+    {
+        
+    }
+}