Add launch configs for vscode

.vscode/launch.json

@@ -0,0 +1,26 @@
+{
+  // 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": [
+    {
+      "type": "node",
+      "request": "launch",
+      "name": "Mocha Tests",
+      "program": "${workspaceFolder}/node_modules/mocha/bin/_mocha",
+      "preLaunchTask": "tscPreload",
+      "args": [
+        "-u",
+        "tdd",
+        "--timeout",
+        "999999",
+        "--colors",
+        "--compilers",
+        "ts:ts-node/register",
+        "${workspaceRoot}/test/*test.ts"
+      ],
+      "internalConsoleOptions": "openOnSessionStart"
+    }
+  ]
+}

.vscode/tasks.json

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+{
+  // See https://go.microsoft.com/fwlink/?LinkId=733558
+  // for the documentation about the tasks.json format
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "label": "tscPreload",
+      "type": "typescript",
+      "tsconfig": "tsconfig.preload.json",
+      "problemMatcher": [
+        "$tsc"
+      ]
+    }
+  ]
+}