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",␊