Add missing hydrate folder to package

Author: craquet

packages/stencil-library/package.json

@@ -89,7 +89,8 @@
   "collection:main": "dist/collection/index.js",
   "files": [
     "dist/",
-    "loader/"
+    "loader/",
+    "hydrate/"
   ],
   "scripts": {
     "build": "stencil build --docs",