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/workers/aes-worker.ts

@@ -0,0 +1,10 @@
+import aesJs from 'aes-js'
+
+self.onmessage = async function (event) {
+    const data = event.data.data as Uint8Array
+    const key = event.data.key as Uint8Array
+    console.log(event)
+    var aesCtr = new aesJs.ModeOfOperation.ctr(key, new aesJs.Counter(7058))
+    const encryptData = aesCtr.encrypt(data)
+    self.postMessage(encryptData)
+}