[LicenceHeader] Updated project to new SDK format

Tools/LicenceHeader/App.config

-<?xml version="1.0" encoding="utf-8"?>
-<configuration>
-    <startup> 
-        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.8"/>
-    </startup>
-</configuration>

Tools/LicenceHeader/LicenceHeader.csproj

-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
     <ProjectGuid>{E8B0B447-1A54-4BEC-A160-AF0017000781}</ProjectGuid>
     <OutputType>Exe</OutputType>
-    <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>LicenceHeader</RootNamespace>
     <AssemblyName>LicenceHeader</AssemblyName>
-    <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
-    <FileAlignment>512</FileAlignment>
-    <TargetFrameworkProfile />
+    <TargetFramework>net48</TargetFramework>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
-    <PlatformTarget>AnyCPU</PlatformTarget>
-    <DebugSymbols>true</DebugSymbols>
-    <DebugType>full</DebugType>
-    <Optimize>false</Optimize>
-    <OutputPath>bin\Debug\</OutputPath>
-    <DefineConstants>DEBUG;TRACE</DefineConstants>
-    <ErrorReport>prompt</ErrorReport>
-    <WarningLevel>4</WarningLevel>
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
-    <PlatformTarget>AnyCPU</PlatformTarget>
-    <DebugType>pdbonly</DebugType>
-    <Optimize>true</Optimize>
-    <OutputPath>bin\Release\</OutputPath>
-    <DefineConstants>TRACE</DefineConstants>
-    <ErrorReport>prompt</ErrorReport>
-    <WarningLevel>4</WarningLevel>
-  </PropertyGroup>
-  <ItemGroup>
-    <Reference Include="System" />
-    <Reference Include="System.Core" />
-  </ItemGroup>
-  <ItemGroup>
-    <Compile Include="Program.cs" />
-    <Compile Include="Properties\AssemblyInfo.cs" />
-  </ItemGroup>
-  <ItemGroup>
-    <None Include="App.config" />
-  </ItemGroup>
   <ItemGroup>
-    <Content Include="header.txt">
+    <None Update="header.txt">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </Content>
+    </None>
   </ItemGroup>
-  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
-       Other similar extension points exist, see Microsoft.Common.targets.
-  <Target Name="BeforeBuild">
-  </Target>
-  <Target Name="AfterBuild">
-  </Target>
-  -->
 </Project>
\ No newline at end of file

Tools/LicenceHeader/Properties/AssemblyInfo.cs

-/*
-* This file is part of VECTO.
-*
-* Copyright © 2012-2019 European Union
-*
-* Developed by Graz University of Technology,
-*              Institute of Internal Combustion Engines and Thermodynamics,
-*              Institute of Technical Informatics
-*
-* VECTO is licensed under the EUPL, Version 1.1 or - as soon they will be approved
-* by the European Commission - subsequent versions of the EUPL (the "Licence");
-* You may not use VECTO except in compliance with the Licence.
-* You may obtain a copy of the Licence at:
-*
-* https://joinup.ec.europa.eu/community/eupl/og_page/eupl
-*
-* Unless required by applicable law or agreed to in writing, VECTO
-* distributed under the Licence is distributed on an "AS IS" basis,
-* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-* See the Licence for the specific language governing permissions and
-* limitations under the Licence.
-*
-* Authors:
-*   Stefan Hausberger, hausberger@ivt.tugraz.at, IVT, Graz University of Technology
-*   Christian Kreiner, christian.kreiner@tugraz.at, ITI, Graz University of Technology
-*   Michael Krisper, michael.krisper@tugraz.at, ITI, Graz University of Technology
-*   Raphael Luz, luz@ivt.tugraz.at, IVT, Graz University of Technology
-*   Markus Quaritsch, markus.quaritsch@tugraz.at, IVT, Graz University of Technology
-*   Martin Rexeis, rexeis@ivt.tugraz.at, IVT, Graz University of Technology
-*/
-
-using System.Reflection;
-using System.Runtime.InteropServices;
-
-[assembly: AssemblyTitle("LicenceHeader")]
-[assembly: AssemblyDescription("")]
-[assembly: AssemblyConfiguration("")]
-[assembly: AssemblyCompany("")]
-[assembly: AssemblyProduct("LicenceHeader")]
-[assembly: AssemblyCopyright("Copyright © 2016")]
-[assembly: AssemblyTrademark("")]
-[assembly: AssemblyCulture("")]
-[assembly: ComVisible(false)]
-[assembly: Guid("90e6bcfe-f3da-4689-b4cd-b191771f1d1b")]
-[assembly: AssemblyVersion("1.0.0.0")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
\ No newline at end of file