Added Firebase JWT and secret generation

www/TEST/client_secret.php

@@ -0,0 +1,29 @@
+<?php
+
+chdir('..');
+require 'vendor/autoload.php';
+
+use Firebase\JWT\JWT;
+
+$teamId = 'JR363FEY8R';
+$keyId = 'W5WTWC9DTJ';
+$sub = 'com.wrenchboard.users.client';
+$aud = 'https://appleid.apple.com'; // it's a fixed URL value
+
+$iat = strtotime('now');
+$exp = strtotime('+60days');
+$keyContent = file_get_contents('/home/oameye/AuthKey_W5WTWC9DTJ.p8');
+
+echo JWT::encode([
+    'iss' => $teamId,
+    'iat' => $iat,
+    'exp' => $exp,
+    'aud' => $aud,
+    'sub' => $sub,
+], $keyContent, 'ES256', $keyId);
+
+// Write the snippet in a method, return the value from that method
+
+// You
+
+?>