feat: 1.现在miaoFetchApi.getFile始终返回Promise<uint8array>. 2.增加文件加/解密插件，样式还没写，加密功能是挺正常的。3.加了个插件模板

src/plugins/miaoCrypto/hooks/AES.ts

@@ -0,0 +1,19 @@
+import aesJs from 'aes-js'
+import aes_worker from '../workers/aes-worker?worker'
+
+/**
+ * 使用worker进行aes加密
+ * @param {any} key:string 须保证长度正确
+ * @param {any} data:Uint8Array
+ * @returns {Uint8Array}
+ */
+export default (key: string, data: Uint8Array) => {
+    const key_u8i = aesJs.utils.utf8.toBytes(key)
+    return new Promise<Uint8Array>((resolve) => {
+        const aesWorker = new aes_worker()
+        aesWorker.onmessage = (event) => {
+            resolve(event.data)
+        }
+        aesWorker.postMessage({ data, key: key_u8i })
+    })
+}