Add minimum npm & node version requirements

This change will prevent any old node or npm version from installing any
packages. With this, npm will throw an error and exit immediately.
This is to prevent the accidental use of unsupported versions which
might cause some issues that are hard to pin-point.

.npmrc

@@ -0,0 +1 @@
+engine-strict=true

package-lock.json

@@ -16,6 +16,10 @@
         "jest": "^29.6.4",
         "jest-cli": "^29.6.4",
         "plop": "^4.0.1"
+      },
+      "engines": {
+        "node": ">=18.0.0",
+        "npm": ">=8.5.5"
       }
     },
     "node_modules/@aashutoshrathi/word-wrap": {

package.json

@@ -22,6 +22,10 @@
     "jest-cli": "^29.6.4",
     "plop": "^4.0.1"
   },
+  "engines": {
+    "npm": ">=8.5.5",
+    "node": ">=18.0.0"
+  },
   "scripts": {
     "test": "jest",
     "generate": "plop"