chore: add dotnet core sample (#255)

samples/DotnetCore/DotnetCore.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\Unleash\Unleash.csproj">
+      <Project>{4cf2127b-8fc8-46fc-8614-3918148463a5}</Project>
+      <Name>Unleash</Name>
+    </ProjectReference>
+  </ItemGroup>
+
+</Project>

samples/DotnetCore/DotnetCore.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.5.002.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DotnetCore", "DotnetCore.csproj", "{CE83946A-DD8A-4D2E-BC85-0B1F6E9A72CE}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{CE83946A-DD8A-4D2E-BC85-0B1F6E9A72CE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{CE83946A-DD8A-4D2E-BC85-0B1F6E9A72CE}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{CE83946A-DD8A-4D2E-BC85-0B1F6E9A72CE}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{CE83946A-DD8A-4D2E-BC85-0B1F6E9A72CE}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {8085F125-1F8A-4991-BEC4-B7ADD45BA1C0}
+	EndGlobalSection
+EndGlobal

samples/DotnetCore/Program.cs

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+using Unleash;
+using Unleash.ClientFactory;
+using Unleash.Internal;
+
+var settings = new UnleashSettings()
+{
+    AppName = "dotnet-test",
+    UnleashApi = new Uri("http://localhost:4242/api"), //setup for running against a local unleash instance, feel free to change this
+    CustomHttpHeaders = new Dictionary<string, string>()
+    {
+      {"Authorization","add a valid client token here" }
+    },
+    SendMetricsInterval = TimeSpan.FromSeconds(1)
+};
+
+const string TOGGLE_NAME = "test";
+
+Console.WriteLine("Starting Unleash SDK");
+
+var unleashFactory = new UnleashClientFactory();
+IUnleash unleash = await unleashFactory.CreateClientAsync(settings, synchronousInitialization: true);
+
+
+while (true)
+{
+    var enabled = unleash.IsEnabled(TOGGLE_NAME);
+    var variant = unleash.GetVariant(TOGGLE_NAME);
+
+    Console.WriteLine($"Toggle enabled: {enabled}, variant: {System.Text.Json.JsonSerializer.Serialize(variant)}");
+    await Task.Delay(1000);
+}