Add first-party MangaPill source and distinct volume releases

scraper/adapters/index.js

@@ -5,6 +5,7 @@
 const adapters = Object.freeze([
   require('../sources/weebcentral'),
   require('../sources/mangadex'),
+  require('../sources/mangapill'),
 ]);
 const { adapterForPeer } = require('../../peering/adapter');