download from node-versions and fallback to node dist (#147)

* download LTS versions from releases

* support upcoiming ghes 

Co-authored-by: eric sciple <ericsciple@users.noreply.github.com>

.vscode/launch.json

@@ -0,0 +1,21 @@
+{
+    // 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": "Debug Jest Tests on Nix",
+            "type": "node",
+            "request": "launch",
+            "runtimeArgs": [
+              "--inspect-brk",
+              "${workspaceRoot}/node_modules/.bin/jest",
+              "--runInBand"
+            ],
+            "console": "integratedTerminal",
+            "internalConsoleOptions": "neverOpen",
+            "port": 9229
+          }        
+    ]
+}