Add missing emoji

Generate GitHub emoji aliases from original source

build/emoji-aliases.js

@@ -0,0 +1,20 @@
+const fs = require('fs')
+
+const data = fs.readFileSync('/dev/stdin', 'utf-8')
+const emoji = JSON.parse(data)
+
+const AllGithubEmoji = []
+for (let i = 0; i < emoji.length; i++) {
+  let o = emoji[i]
+  if (o.aliases) {
+    AllGithubEmoji.push(...o.aliases)
+  }
+}
+
+const str = `// DO NOT EDIT THIS FILE, IT'S GENERATED
+// All from github official gemoji repo
+// see https://github.com/github/gemoji/blob/master/db/emoji.json
+export default ${JSON.stringify(AllGithubEmoji)}
+`
+
+fs.writeFileSync(__dirname + '/../src/plugins/emoji-aliases.js', str)