Migrate plugins to lib directory

lib/plugins/email/mailjet/mailjet.js

@@ -0,0 +1,23 @@
+const Mailjet = require('node-mailjet')
+
+const NAME = 'Mailjet'
+
+function sendMessage (account, rec) {
+  const mailjet = Mailjet.connect(account.apiKey, account.apiSecret)
+  const sendEmail = mailjet.post('send')
+
+  const emailData = {
+    FromEmail: account.fromEmail,
+    FromName: 'Lamassu Server',
+    Subject: rec.email.subject,
+    'Text-part': rec.email.body,
+    Recipients: [{'Email': account.toEmail}]
+  }
+
+  return sendEmail.request(emailData)
+}
+
+module.exports = {
+  NAME,
+  sendMessage
+}