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

think

@@ -0,0 +1,11 @@
+#!/usr/bin/env php
+<?php
+
+use think\App;
+
+// 命令行入口文件
+// 加载基础文件
+require __DIR__ . '/vendor/autoload.php';
+
+// 应用初始化
+(new App())->console->run();