Add configuration for sharing emoji packs

This adds the configuration interface for the endpoints introduced here.

src/api/emoji_packs.js

@@ -73,8 +73,6 @@ export async function updatePackFile(host, token, args) {
     case 'add': {
       const { shortcode, file, fileName } = args
 
-      console.log(file)
-
       data = fileUpdateFormData({
         action: 'add',
         shortcode: shortcode,