Add a VSCode task file

Author: cedx

.vscode/tasks.json

@@ -0,0 +1,13 @@
+{
+	"version": "2.0.0",
+	"tasks": [
+		{
+			"label": "build",
+			"group": {"kind": "build", "isDefault": true},
+			"type": "shell",
+			"command": "dotnet",
+			"args": ["cake", "--target", "build"],
+			"problemMatcher": "$msCompile"
+		}
+	]
+}