build(npm): mandate Node.js engine version

This change mandates a particular version of Node.js when running
`npm install`. When using a version of Node.js that does not meet these
expectations, a warning will be emitted to the user to let them know
that they are using an unsupported version of Node.js

Change-Id: I3f9bcf8be483a80b5882d65b034c6655013df19f
Signed-off-by: Chris Kay <chris.kay@arm.com>

package-lock.json

@@ -18,6 +18,9 @@
         "husky": "^7.0.4",
         "js-yaml": "^4.1.0",
         "standard-version": "^9.3.2"
+      },
+      "engines": {
+        "node": ">=16.0.0"
       }
     },
     "node_modules/@babel/code-frame": {

package.json

@@ -7,6 +7,9 @@
     "postinstall": "husky install",
     "release": "standard-version"
   },
+  "engines": {
+    "node": ">=16.0.0"
+  },
   "devDependencies": {
     "@commitlint/cli": "^16.1.0",
     "@commitlint/config-conventional": "^16.0.0",