Added EonaCat Env testers

EnvTester/EnvTester/EnvTester.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Reference Include="EonaCat.Env">
+      <HintPath>..\..\..\EonaCat.Env\EonaCat.Env\bin\Debug\netstandard2.1\EonaCat.Env.dll</HintPath>
+    </Reference>
+  </ItemGroup>
+
+</Project>

EnvTester/EnvTester/Program.cs

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+// See https://aka.ms/new-console-template for more information
+using EonaCat.Env;
+using EonaCat.Env.Helpers;
+
+Console.WriteLine("Hello, World!");
+Env.LoadIntoEnvironment();
+var test = Env.Read(new Settings(traverseDirectories:true));
+Getter.SwallowExceptions = true;
+Console.WriteLine(Environment.GetEnvironmentVariable("nummer4"));
+Console.WriteLine(Getter.GetString("nummer4"));
+Console.WriteLine("+------+");
+Console.WriteLine(Environment.GetEnvironmentVariable("FAAL"));
+Console.WriteLine("test");