add legacy support of checkbox, add documents for cookie/lgres/request

lib/utility/cookie.html

@@ -0,0 +1,40 @@
+<div>
+    <h1>cookie</h1>
+    <hr />
+    <p>
+        cookie 操作工具类：获取、设置、删除。
+    </p>
+    <h2>getCookie</h2>
+    <code>function getCookie(name: string): string</code>
+    <h3>name: string</h3>
+    <p>
+        待获取的 cookie 关键字
+    </p>
+    <h2>setCookie</h2>
+    <code>function setCookie(name: string, value: string, expireDays?: Number): void</code>
+    <h3>name: string</h3>
+    <p>
+        待设置的 cookie 关键字
+    </p>
+    <h3>value: string</h3>
+    <p>
+        待设置的值
+    </p>
+    <h3>expireDays?: Number</h3>
+    <p>
+        有效期天数
+    </p>
+    <h2>deleteCookie</h2>
+    <code>function deleteCookie(name: string): void</code>
+    <h3>name: string</h3>
+    <p>
+        待删除的 cookie 关键字
+    </p>
+    <hr />
+    <h2>用法</h2>
+    <pre>const cookie = window["lib-utility"];
+
+cookie.getCookie('user_id');
+cookie.setCookie('user_id', 'guest');
+cookie.deleteCookie('user_id');</pre>
+</div>