Add project files.

KoliMester3000.slnx

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+<Solution>
+  <Project Path="KoliMester3000/KoliMester3000.csproj" />
+</Solution>

KoliMester3000/KoliMester3000.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

KoliMester3000/Program.cs

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+namespace KoliMester3000
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("c# c# indul a varazs");
+        }
+    }
+}