added a dotnet core template

MLEM.Templates/content/MLEM.Templates.DesktopGL.Core/.template.config/dotnetcli.host.json

@@ -0,0 +1,2 @@
+{
+}

MLEM.Templates/content/MLEM.Templates.DesktopGL.Core/.template.config/template.json

@@ -0,0 +1,20 @@
+{
+    "$schema": "http://json.schemastore.org/template",
+    "author": "Ellpeck",
+    "classifications": ["MLEM", "MonoGame"],
+    "groupIdentity": "MLEM.Templates.DesktopGL.Core",
+    "identity": "MLEM.Templates.DesktopGL.Core",
+    "name": "MLEM DesktopGL Core",
+    "shortName": "mlemdesktopglcore",
+    "sourceName": "TemplateNamespace",
+    "preferNameDirectory": true,
+    "tags": {
+        "language": "C#",
+        "type": "project"
+    },
+    "primaryOutputs": [
+        {
+            "path": "TemplateNamespace.csproj"
+        }
+    ]
+}

MLEM.Templates/content/MLEM.Templates.DesktopGL.Core/Content/Content.mgcb

@@ -0,0 +1,15 @@
+
+#----------------------------- Global Properties ----------------------------#
+
+/outputDir:bin
+/intermediateDir:obj
+/platform:Windows
+/config:
+/profile:Reach
+/compress:False
+
+#-------------------------------- References --------------------------------#
+
+
+#---------------------------------- Content ---------------------------------#
+

MLEM.Templates/content/MLEM.Templates.DesktopGL.Core/GameImpl.cs

@@ -0,0 +1,7 @@
+using MLEM.Startup;
+
+namespace TemplateNamespace {
+    public class GameImpl : MlemGame {
+
+    }
+}

MLEM.Templates/content/MLEM.Templates.DesktopGL.Core/Program.cs

@@ -0,0 +1,14 @@
+using Microsoft.Xna.Framework;
+using MLEM.Misc;
+
+namespace TemplateNamespace {
+    public static class Program {
+
+        public static void Main() {
+            TextInputWrapper.Current = new TextInputWrapper.DesktopGl<TextInputEventArgs>((w, c) => w.TextInput += c);
+            using var game = new GameImpl();
+            game.Run();
+        }
+
+    }
+}

MLEM.Templates/content/MLEM.Templates.DesktopGL.Core/TemplateNamespace.csproj

@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <OutputType>Exe</OutputType>
+        <TargetFramework>netcoreapp3.0</TargetFramework>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Contentless" Version="2.0.*" />
+        <PackageReference Include="MLEM.Startup" Version="3.2.*" />
+        <PackageReference Include="MonoGame.Content.Builder" Version="3.7.*" />
+        <PackageReference Include="MonoGame.Framework.DesktopGL.Core" Version="3.8.*" />
+    </ItemGroup>
+
+    <ItemGroup>
+        <MonoGameContentReference Include="Content\Content.mgcb" />
+        <Content Include="Content\*\**" />
+    </ItemGroup>
+
+</Project>

MLEM/Misc/TextInputWrapper.cs

@@ -29,7 +29,7 @@ namespace MLEM.Misc {
 
         public delegate void TextInputCallback(object sender, Keys key, char character);
 
-        public class DesktopGl<T> : TextInputWrapper where T : EventArgs {
+        public class DesktopGl<T> : TextInputWrapper {
 
             private PropertyInfo key;
             private PropertyInfo character;