feat(scheme): 新增数据库表结构同步方案

extend/base/common/scheme/attribute/Field.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace base\common\scheme\attribute;
+
+use Attribute;
+
+#[Attribute(Attribute::TARGET_PROPERTY)]
+class Field
+{
+    public function __construct(
+        public string $type = 'varchar',
+        public ?int $length = null,
+        public int $precision = 0,
+        public int $scale = 0,
+        public bool $nullable = true,
+        public mixed $default = null,
+        public string $comment = '',
+        public bool $unsigned = false,
+        public bool $autoIncrement = false,
+        public bool $primary = false
+    ) {
+    }
+}