feat: support languageName field (#191)

Author: fisker

index.js

@@ -257,6 +257,7 @@ const fields = [
  { key: 'flat' },
  { key: 'engines', over: sortObject },
  { key: 'engineStrict', over: sortObject },
+ { key: 'languageName' },
  { key: 'os' },
  { key: 'cpu' },
  { key: 'preferGlobal', over: sortObject },

tests/snapshots/cli.js.snap

@@ -56,6 +56,7 @@ Generated by [AVA](https://avajs.dev).
   "jsdelivr": "jsdelivr",␊
   "jsnext:main": "jsnext:main",␊
   "keywords": "keywords",␊
+  "languageName": "languageName",␊
   "license": "license",␊
   "lint-staged": "lint-staged",␊
   "main": "main",␊
@@ -174,6 +175,7 @@ Generated by [AVA](https://avajs.dev).
   "flat": "flat",␊
   "engines": "engines",␊
   "engineStrict": "engineStrict",␊
+  "languageName": "languageName",␊
   "os": "os",␊
   "cpu": "cpu",␊
   "preferGlobal": "preferGlobal",␊