Bump Node.js package version to 1.0.0 (#123)

Update the major version as we are dropping support for Node 8.x

Bug: T266462

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@wikimedia/language-data",
-  "version": "0.2.2",
+  "version": "1.0.0",
   "description": "Language data and utilities.",
   "homepage": "https://language-data.readthedocs.io/en/latest/index.html",
   "keywords": [