feat: 修改composer license

composer.json

@@ -2,6 +2,7 @@
   "name": "jiwei/easy-http-sdk",
   "description": "http client sdk generation.",
   "type": "library",
+  "license": "MIT",
   "autoload": {
     "psr-4": {
       "Jiwei\\EasyHttpSdk\\": "src/"