(build) Added the ability to debug Cake Script

Author: gep13

.vscode/launch.json

@@ -0,0 +1,19 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": ".NET Core Launch (console)",
+            "type": "coreclr",
+            "request": "launch",
+            "program": "${workspaceRoot}/tools/Cake.CoreCLR/Cake.dll",
+            "args": [
+                "${workspaceRoot}/build.cake",
+                "--debug",
+                "--verbosity=diagnostic"
+            ],
+            "cwd": "${workspaceRoot}",
+            "stopAtEntry": true,
+            "externalConsole": false
+        }
+    ]
+}

tools/packages.config

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+	<package id="Cake" version="0.16.1" />
+	<package id="Cake.CoreCLR" version="0.16.1" />
+</packages>