Add project files.

AlientAttack.MonoGame/.vscode/launch.json

@@ -0,0 +1,14 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+      {
+        "name": "C#: AlientAttack.MonoGame Debug",
+        "type": "dotnet",
+        "request": "launch",
+        "projectPath": "${workspaceFolder}/AlientAttack.MonoGame.csproj"
+      }
+    ],
+  }