add .Net Standard Library project and (Visual Studio) solution.

DeathSocket.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.28010.2019
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{F2A71F9B-5D33-465A-A702-920D77279786}") = "DeathSocket", "DeathSocket\DeathSocket.fsproj", "{6EB4B4DD-10FA-44AF-94C8-DD49F0A0B7D8}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{6EB4B4DD-10FA-44AF-94C8-DD49F0A0B7D8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{6EB4B4DD-10FA-44AF-94C8-DD49F0A0B7D8}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6EB4B4DD-10FA-44AF-94C8-DD49F0A0B7D8}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{6EB4B4DD-10FA-44AF-94C8-DD49F0A0B7D8}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {7FC85C4F-5837-41A4-A4E0-5D702768CCCD}
+	EndGlobalSection
+EndGlobal

DeathSocket/DeathSocket.fsproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Compile Include="Library.fs" />
+  </ItemGroup>
+
+</Project>

DeathSocket/Library.fs

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+namespace DeathSocket
+
+module Say =
+    let hello name =
+        printfn "Hello %s" name