Update README.md to include comprehensive documentation for ThinkPHP 8, featuring installation instructions, new features, sponsorship details, and links to resources.

app/provider.php

@@ -0,0 +1,9 @@
+<?php
+use app\ExceptionHandle;
+use app\Request;
+
+// 容器Provider定义文件
+return [
+    'think\Request'          => Request::class,
+    'think\exception\Handle' => ExceptionHandle::class,
+];