Add (initial): futurewalker code

config/tiktoken.php

@@ -0,0 +1,15 @@
+<?php
+
+// config for Tiktoken
+return [
+    // Cache folder for vocab files
+    'cache_dir' => storage_path('framework/cache/tiktoken'),
+
+    /**
+     * The default encoder
+     * cl100k_base: gpt-4, gpt-3.5-turbo, text-embedding-ada-002
+     * p50k_base: Codex models, text-davinci-002, text-davinci-003
+     * r50k_base: text-davinci-001
+     */
+    'default_encoder' => 'cl100k_base',
+];