Add the ability to log users and their shared subdomains

app/Contracts/LoggerRepository.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace App\Contracts;
+
+use React\Promise\PromiseInterface;
+
+interface LoggerRepository
+{
+    public function logSubdomain($authToken, $subdomain);
+
+    public function getLogs(): PromiseInterface;
+
+    public function getLogsBySubdomain($subdomain): PromiseInterface;
+}