Add vscode debugger launch config

.nvmrc

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+20

.vscode/launch.json

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+{
+  // 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": [
+    {
+      "protocol": "inspector",
+      "type": "node",
+      "request": "launch",
+      "name": "Mocha Test current file",
+      "program": "${workspaceFolder}/node_modules/.bin/mocha",
+      "args": ["--colors", "--timeout", "0", "${file}"],
+      "runtimeExecutable": "fnm",
+      "runtimeArgs": ["exec", "node", "--"],
+      "internalConsoleOptions": "openOnSessionStart",
+      "console": "internalConsole",
+      "outputCapture": "std",
+      "env": {}
+    }
+  ]
+}