add node 16.3.0 package (#286)

packages/node/16.3.0/build.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+curl "https://nodejs.org/dist/v16.3.0/node-v16.3.0-linux-x64.tar.xz" -o node.tar.xz
+tar xf node.tar.xz --strip-components=1
+rm node.tar.xz

packages/node/16.3.0/environment

@@ -0,0 +1 @@
+export PATH=$PWD/bin:$PATH

packages/node/16.3.0/metadata.json

@@ -0,0 +1,10 @@
+{
+    "language": "node",
+    "version": "16.3.0",
+    "provides": [
+        {
+            "language": "javascript",
+            "aliases": ["node-javascript", "node-js", "javascript", "js"]
+        }
+    ]
+}

packages/node/16.3.0/run

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+node "$@"

packages/node/16.3.0/test.js

@@ -0,0 +1 @@
+console.log("OK")