Add .Net Core build files

Author: tstenner

liblsl.csproj

@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <Authors>Christian Kothe</Authors>
+    <TargetFramework>netstandard2.0</TargetFramework>
+    <RootNamespace>LSL</RootNamespace>
+    <Product>Labstreaminglayer C# bindings</Product>
+    <Version>1.1.2</Version>
+    <DefaultItemExcludes>$(DefaultItemExcludes);examples/**</DefaultItemExcludes>
+  </PropertyGroup>
+</Project>
+

liblsl.sln

@@ -0,0 +1,34 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.26124.0
+MinimumVisualStudioVersion = 15.0.26124.0
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "liblsl", "liblsl.csproj", "{9CF380F5-EB84-4A39-969E-7E6F5534F17F}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|Any CPU = Release|Any CPU
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{9CF380F5-EB84-4A39-969E-7E6F5534F17F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{9CF380F5-EB84-4A39-969E-7E6F5534F17F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{9CF380F5-EB84-4A39-969E-7E6F5534F17F}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{9CF380F5-EB84-4A39-969E-7E6F5534F17F}.Debug|x64.Build.0 = Debug|Any CPU
+		{9CF380F5-EB84-4A39-969E-7E6F5534F17F}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{9CF380F5-EB84-4A39-969E-7E6F5534F17F}.Debug|x86.Build.0 = Debug|Any CPU
+		{9CF380F5-EB84-4A39-969E-7E6F5534F17F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{9CF380F5-EB84-4A39-969E-7E6F5534F17F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{9CF380F5-EB84-4A39-969E-7E6F5534F17F}.Release|x64.ActiveCfg = Release|Any CPU
+		{9CF380F5-EB84-4A39-969E-7E6F5534F17F}.Release|x64.Build.0 = Release|Any CPU
+		{9CF380F5-EB84-4A39-969E-7E6F5534F17F}.Release|x86.ActiveCfg = Release|Any CPU
+		{9CF380F5-EB84-4A39-969E-7E6F5534F17F}.Release|x86.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal